22220102121021 has 32 divisors (see below), whose sum is σ = 37771222809600. Its totient is φ = 12646614726000.

The previous prime is 22220102120977. The next prime is 22220102121023. The reversal of 22220102121021 is 12012120102222.

It is a happy number.

22220102121021 is a `hidden beast` number, since 222 + 201 + 0 + 212 + 10 + 21 = 666.

It is not a de Polignac number, because 22220102121021 - 2¹⁷ = 22220101989949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22220102120985 and 22220102121003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220102121023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234149131 + ... + 234244008.

It is an arithmetic number, because the mean of its divisors is an integer number (1180350712800).

Almost surely, 2^{22220102121021} is an apocalyptic number.

22220102121021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22220102121021 is a deficient number, since it is larger than the sum of its proper divisors (15551120688579).

22220102121021 is a wasteful number, since it uses less digits than its factorization.

22220102121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468393406 (or 468393400 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22220102121021 its reverse (12012120102222), we get a palindrome (34232222223243).

The spelling of 22220102121021 in words is "twenty-two trillion, two hundred twenty billion, one hundred two million, one hundred twenty-one thousand, twenty-one".