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20121112332 = 2232661845567
BaseRepresentation
bin10010101111010011…
…111100111100001100
31220221021102102010200
4102233103330330030
5312202001043312
613124333133500
71311422430036
oct225723747414
956837372120
1020121112332
118595930562
123a9662a290
131b88800c39
14d8c410c56
157cb6e10dc
hex4af4fcf0c

20121112332 has 36 divisors (see below), whose sum is σ = 50938707456. Its totient is φ = 6696882720.

The previous prime is 20121112327. The next prime is 20121112343. The reversal of 20121112332 is 23321112102.

20121112332 is a `hidden beast` number, since 201 + 21 + 112 + 332 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×201211123322 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 398988 + ... + 446579.

It is an arithmetic number, because the mean of its divisors is an integer number (1414964096).

Almost surely, 220121112332 is an apocalyptic number.

It is an amenable number.

20121112332 is an abundant number, since it is smaller than the sum of its proper divisors (30817595124).

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

20121112332 is a wasteful number, since it uses less digits than its factorization.

20121112332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846238 (or 846233 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20121112332 its reverse (23321112102), we get a palindrome (43442224434).

The spelling of 20121112332 in words is "twenty billion, one hundred twenty-one million, one hundred twelve thousand, three hundred thirty-two".

Divisors: 1 2 3 4 6 9 12 18 36 661 1322 1983 2644 3966 5949 7932 11898 23796 845567 1691134 2536701 3382268 5073402 7610103 10146804 15220206 30440412 558919787 1117839574 1676759361 2235679148 3353518722 5030278083 6707037444 10060556166 20121112332