22021120001000 has 64 divisors (see below), whose sum is σ = 51665383224000. Its totient is φ = 8785206561600.

The previous prime is 22021120000967. The next prime is 22021120001011. The reversal of 22021120001000 is 10002112022.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28672610 + ... + 29430609.

It is an arithmetic number, because the mean of its divisors is an integer number (807271612875).

Almost surely, 2^{22021120001000} is an apocalyptic number.

22021120001000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021120001000 is an abundant number, since it is smaller than the sum of its proper divisors (29644263223000).

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

22021120001000 is a wasteful number, since it uses less digits than its factorization.

22021120001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58103619 (or 58103605 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22021120001000 its reverse (10002112022), we get a palindrome (22031122113022).

The spelling of 22021120001000 in words is "twenty-two trillion, twenty-one billion, one hundred twenty million, one thousand".