123211012 has 6 divisors (see below), whose sum is σ = 215619278. Its totient is φ = 61605504.

The previous prime is 123211003. The next prime is 123211021. The reversal of 123211012 is 210112321.

It is an interprime number because it is at equal distance from previous prime (123211003) and next prime (123211021).

It can be written as a sum of positive squares in only one way, i.e., 109327936 + 13883076 = 10456^2 + 3726^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123210983 and 123211001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15401373 + ... + 15401380.

Almost surely, 2^123211012 is an apocalyptic number.

It is an amenable number.

123211012 is a deficient number, since it is larger than the sum of its proper divisors (92408266).

123211012 is a wasteful number, since it uses less digits than its factorization.

123211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30802757 (or 30802755 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 123211012 is about 11100.0455854920. The cubic root of 123211012 is about 497.6032118378.

Adding to 123211012 its reverse (210112321), we get a palindrome (333323333).

The spelling of 123211012 in words is "one hundred twenty-three million, two hundred eleven thousand, twelve".