221012233231000 has 32 divisors (see below), whose sum is σ = 517168625762880. Its totient is φ = 88404893292000.

The previous prime is 221012233230979. The next prime is 221012233231003. The reversal of 221012233231000 is 132332210122.

It is a super-2 number, since 2×221012233231000² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221012233231003) 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, 110506115616 + ... + 110506117615.

It is an arithmetic number, because the mean of its divisors is an integer number (16161519555090).

Almost surely, 2^{221012233231000} is an apocalyptic number.

221012233231000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221012233231000 is an abundant number, since it is smaller than the sum of its proper divisors (296156392531880).

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

221012233231000 is a wasteful number, since it uses less digits than its factorization.

221012233231000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221012233252 (or 221012233238 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 221012233231000 its reverse (132332210122), we get a palindrome (221144565441122).

The spelling of 221012233231000 in words is "two hundred twenty-one trillion, twelve billion, two hundred thirty-three million, two hundred thirty-one thousand".