10221111112020 has 48 divisors (see below), whose sum is σ = 28621359123840. Its totient is φ = 2725415533696.

The previous prime is 10221111111979. The next prime is 10221111112033. The reversal of 10221111112020 is 2021111112201.

It is a happy number.

It is a super-2 number, since 2×10221111112020² (a number of 27 digits) contains 22 as substring.

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

It is a congruent 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, 5919555 + ... + 7448714.

It is an arithmetic number, because the mean of its divisors is an integer number (596278315080).

Almost surely, 2^{10221111112020} is an apocalyptic number.

10221111112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221111112020 is an abundant number, since it is smaller than the sum of its proper divisors (18400248011820).

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

10221111112020 is a wasteful number, since it uses less digits than its factorization.

10221111112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13381024 (or 13381022 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10221111112020 its reverse (2021111112201), we get a palindrome (12242222224221).

The spelling of 10221111112020 in words is "ten trillion, two hundred twenty-one billion, one hundred eleven million, one hundred twelve thousand, twenty".