212231022421000 has 128 divisors (see below), whose sum is σ = 542669380081920. Its totient is φ = 77046504000000.

The previous prime is 212231022420997. The next prime is 212231022421021. The reversal of 212231022421000 is 124220132212.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9440356 + ... + 22662355.

It is an arithmetic number, because the mean of its divisors is an integer number (4239604531890).

Almost surely, 2^{212231022421000} is an apocalyptic number.

212231022421000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212231022421000 is an abundant number, since it is smaller than the sum of its proper divisors (330438357660920).

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

212231022421000 is a wasteful number, since it uses less digits than its factorization.

212231022421000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32103344 (or 32103330 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 212231022421000 its reverse (124220132212), we get a palindrome (212355242553212).

The spelling of 212231022421000 in words is "two hundred twelve trillion, two hundred thirty-one billion, twenty-two million, four hundred twenty-one thousand".