20002232121000 has 128 divisors (see below), whose sum is σ = 65691541468800. Its totient is φ = 5053195468800.

The previous prime is 20002232120909. The next prime is 20002232121031. The reversal of 20002232121000 is 12123220002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175401177 + ... + 175515176.

It is an arithmetic number, because the mean of its divisors is an integer number (513215167725).

Almost surely, 2^{20002232121000} is an apocalyptic number.

20002232121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002232121000 is an abundant number, since it is smaller than the sum of its proper divisors (45689309347800).

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

20002232121000 is a wasteful number, since it uses less digits than its factorization.

20002232121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350916396 (or 350916382 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20002232121000 its reverse (12123220002), we get a palindrome (20014355341002).

The spelling of 20002232121000 in words is "twenty trillion, two billion, two hundred thirty-two million, one hundred twenty-one thousand".