22012021211020 has 48 divisors (see below), whose sum is σ = 46635131743200. Its totient is φ = 8726987815424.

The previous prime is 22012021211009. The next prime is 22012021211039. The reversal of 22012021211020 is 2011212021022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22012021210985 and 22012021211003.

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, 6516889 + ... + 9300208.

It is an arithmetic number, because the mean of its divisors is an integer number (971565244650).

Almost surely, 2^{22012021211020} is an apocalyptic number.

22012021211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22012021211020 is an abundant number, since it is smaller than the sum of its proper divisors (24623110532180).

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

22012021211020 is a wasteful number, since it uses less digits than its factorization.

22012021211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15817722 (or 15817720 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22012021211020 its reverse (2011212021022), we get a palindrome (24023233232042).

The spelling of 22012021211020 in words is "twenty-two trillion, twelve billion, twenty-one million, two hundred eleven thousand, twenty".