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2121331302 = 233311267223
BaseRepresentation
bin111111001110000…
…1111001001100110
312110211122210111000
41332130033021212
513321030100202
6550255254130
7103366006236
oct17634171146
95424583430
102121331302
11999488672
124b251a346
1327a64922c
14161a3dcc6
15c637c91c
hex7e70f266

2121331302 has 32 divisors (see below), whose sum is σ = 4866140160. Its totient is φ = 684299880.

The previous prime is 2121331301. The next prime is 2121331321. The reversal of 2121331302 is 2031331212.

It is a super-3 number, since 3×21213313023 (a number of 29 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121331301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631938 + ... + 635285.

It is an arithmetic number, because the mean of its divisors is an integer number (152066880).

Almost surely, 22121331302 is an apocalyptic number.

2121331302 is an abundant number, since it is smaller than the sum of its proper divisors (2744808858).

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

2121331302 is a wasteful number, since it uses less digits than its factorization.

2121331302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267265 (or 1267259 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2121331302 is about 46057.9124798335. The cubic root of 2121331302 is about 1284.9005059557.

Adding to 2121331302 its reverse (2031331212), we get a palindrome (4152662514).

The spelling of 2121331302 in words is "two billion, one hundred twenty-one million, three hundred thirty-one thousand, three hundred two".

Divisors: 1 2 3 6 9 18 27 31 54 62 93 186 279 558 837 1674 1267223 2534446 3801669 7603338 11405007 22810014 34215021 39283913 68430042 78567826 117851739 235703478 353555217 707110434 1060665651 2121331302