1212211012 has 6 divisors (see below), whose sum is σ = 2121369278. Its totient is φ = 606105504.

The previous prime is 1212211009. The next prime is 1212211031. The reversal of 1212211012 is 2101122121.

It can be written as a sum of positive squares in only one way, i.e., 1111288896 + 100922116 = 33336^2 + 10046^2 .

It is a super-2 number, since 2×1212211012² = 2938911075228128288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1212210983 and 1212211001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151526373 + ... + 151526380.

Almost surely, 2^1212211012 is an apocalyptic number.

It is an amenable number.

1212211012 is a deficient number, since it is larger than the sum of its proper divisors (909158266).

1212211012 is a wasteful number, since it uses less digits than its factorization.

1212211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303052757 (or 303052755 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1212211012 is about 34816.8208198279. The cubic root of 1212211012 is about 1066.2508939913.

Adding to 1212211012 its reverse (2101122121), we get a palindrome (3313333133).

The spelling of 1212211012 in words is "one billion, two hundred twelve million, two hundred eleven thousand, twelve".