211321012 has 12 divisors (see below), whose sum is σ = 422642080. Its totient is φ = 90566136.

The previous prime is 211321009. The next prime is 211321031. The reversal of 211321012 is 210123112.

211321012 is an admirable number.

It is a super-2 number, since 2×211321012² = 89313140225408288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211320983 and 211321001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3773562 + ... + 3773617.

Almost surely, 2^211321012 is an apocalyptic number.

It is an amenable number.

211321012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

211321012 is a wasteful number, since it uses less digits than its factorization.

211321012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7547190 (or 7547188 counting only the distinct ones).

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

The square root of 211321012 is about 14536.8845355530. The cubic root of 211321012 is about 595.6359389460.

Adding to 211321012 its reverse (210123112), we get a palindrome (421444124).

The spelling of 211321012 in words is "two hundred eleven million, three hundred twenty-one thousand, twelve".