22201021231020 has 36 divisors (see below), whose sum is σ = 67343097734640. Its totient is φ = 5920272328224.

The previous prime is 22201021231013. The next prime is 22201021231049. The reversal of 22201021231020 is 2013212010222.

22201021231020 is a `hidden beast` number, since 2 + 220 + 102 + 12 + 310 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22201021230984 and 22201021231002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61669503240 + ... + 61669503599.

It is an arithmetic number, because the mean of its divisors is an integer number (1870641603740).

Almost surely, 2^{22201021231020} is an apocalyptic number.

22201021231020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22201021231020 is an abundant number, since it is smaller than the sum of its proper divisors (45142076503620).

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

22201021231020 is a wasteful number, since it uses less digits than its factorization.

22201021231020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123339006854 (or 123339006849 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22201021231020 its reverse (2013212010222), we get a palindrome (24214233241242).

The spelling of 22201021231020 in words is "twenty-two trillion, two hundred one billion, twenty-one million, two hundred thirty-one thousand, twenty".