212222100012 has 24 divisors (see below), whose sum is σ = 533276046576. Its totient is φ = 65299107648.

The previous prime is 212222099981. The next prime is 212222100017. The reversal of 212222100012 is 210001222212.

It is a junction number, because it is equal to n+sod(n) for n = 212222099964 and 212222100000.

It is not an unprimeable number, because it can be changed into a prime (212222100017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680198883 + ... + 680199194.

It is an arithmetic number, because the mean of its divisors is an integer number (22219835274).

Almost surely, 2^212222100012 is an apocalyptic number.

It is an amenable number.

212222100012 is an abundant number, since it is smaller than the sum of its proper divisors (321053946564).

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

212222100012 is a wasteful number, since it uses less digits than its factorization.

212222100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360398097 (or 1360398095 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212222100012 its reverse (210001222212), we get a palindrome (422223322224).

The spelling of 212222100012 in words is "two hundred twelve billion, two hundred twenty-two million, one hundred thousand, twelve".