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12212031112 = 235563274403
BaseRepresentation
bin10110101111110010…
…01100111010001000
31011112002002110100121
423113321030322020
5200002234443422
65335442113024
7611424360151
oct132771147210
934462073317
1012212031112
1151a74117a6
12244994b774
1311c8072018
1483bc52928
154b71a48c7
hex2d7e4ce88

12212031112 has 16 divisors (see below), whose sum is σ = 22901757840. Its totient is φ = 6104895696.

The previous prime is 12212031077. The next prime is 12212031113. The reversal of 12212031112 is 21113021221.

It is not an unprimeable number, because it can be changed into a prime (12212031113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92698 + ... + 181705.

It is an arithmetic number, because the mean of its divisors is an integer number (1431359865).

Almost surely, 212212031112 is an apocalyptic number.

It is an amenable number.

12212031112 is a deficient number, since it is larger than the sum of its proper divisors (10689726728).

12212031112 is a wasteful number, since it uses less digits than its factorization.

12212031112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279972 (or 279968 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12212031112 its reverse (21113021221), we get a palindrome (33325052333).

The spelling of 12212031112 in words is "twelve billion, two hundred twelve million, thirty-one thousand, one hundred twelve".

Divisors: 1 2 4 8 5563 11126 22252 44504 274403 548806 1097612 2195224 1526503889 3053007778 6106015556 12212031112