212311222000 has 80 divisors (see below), whose sum is σ = 518353198272. Its totient is φ = 84099897600.

The previous prime is 212311221973. The next prime is 212311222001. The reversal of 212311222000 is 222113212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212311222001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309319 + ... + 721318.

Almost surely, 2^212311222000 is an apocalyptic number.

212311222000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212311222000 is an abundant number, since it is smaller than the sum of its proper divisors (306041976272).

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

212311222000 is a wasteful number, since it uses less digits than its factorization.

212311222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030763 (or 1030747 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 212311222000 its reverse (222113212), we get a palindrome (212533335212).

The spelling of 212311222000 in words is "two hundred twelve billion, three hundred eleven million, two hundred twenty-two thousand".