22102220020021 has 16 divisors (see below), whose sum is σ = 24476241170304. Its totient is φ = 19851697603584.

The previous prime is 22102220020009. The next prime is 22102220020031. The reversal of 22102220020021 is 12002002220122.

It is a cyclic number.

It is not a de Polignac number, because 22102220020021 - 2¹⁷ = 22102219888949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22102220019977 and 22102220020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102220020031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65104851 + ... + 65443456.

It is an arithmetic number, because the mean of its divisors is an integer number (1529765073144).

Almost surely, 2^{22102220020021} is an apocalyptic number.

It is an amenable number.

22102220020021 is a deficient number, since it is larger than the sum of its proper divisors (2374021150283).

22102220020021 is a wasteful number, since it uses less digits than its factorization.

22102220020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130548780.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22102220020021 its reverse (12002002220122), we get a palindrome (34104222240143).

The spelling of 22102220020021 in words is "twenty-two trillion, one hundred two billion, two hundred twenty million, twenty thousand, twenty-one".