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13211212332 = 2238912370049
BaseRepresentation
bin11000100110111001…
…10001101000101100
31021002201020010022110
430103130301220230
5204024032243312
610022534044020
7645246311013
oct142334615054
937081203273
1013211212332
11566a4263aa
1226884a9610
131327083606
148d4829a7a
15524c7343c
hex313731a2c

13211212332 has 24 divisors (see below), whose sum is σ = 31172526000. Its totient is φ = 4354256896.

The previous prime is 13211212283. The next prime is 13211212367. The reversal of 13211212332 is 23321211231.

It is a super-4 number, since 4×132112123324 (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 13211212299 and 13211212308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6183957 + ... + 6186092.

It is an arithmetic number, because the mean of its divisors is an integer number (1298855250).

Almost surely, 213211212332 is an apocalyptic number.

13211212332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13211212332 is an abundant number, since it is smaller than the sum of its proper divisors (17961313668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13211212332 is a wasteful number, since it uses less digits than its factorization.

13211212332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12370145 (or 12370143 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

Adding to 13211212332 its reverse (23321211231), we get a palindrome (36532423563).

The spelling of 13211212332 in words is "thirteen billion, two hundred eleven million, two hundred twelve thousand, three hundred thirty-two".

Divisors: 1 2 3 4 6 12 89 178 267 356 534 1068 12370049 24740098 37110147 49480196 74220294 148440588 1100934361 2201868722 3302803083 4403737444 6605606166 13211212332