22102020220021 has 16 divisors (see below), whose sum is σ = 25343696327040. Its totient is φ = 18881446510080.

The previous prime is 22102020220009. The next prime is 22102020220031. The reversal of 22102020220021 is 12002202020122.

It is not a de Polignac number, because 22102020220021 - 2⁹ = 22102020219509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22102020219977 and 22102020220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102020220001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4721106 + ... + 8154316.

It is an arithmetic number, because the mean of its divisors is an integer number (1583981020440).

Almost surely, 2^{22102020220021} is an apocalyptic number.

It is an amenable number.

22102020220021 is a deficient number, since it is larger than the sum of its proper divisors (3241676107019).

22102020220021 is a wasteful number, since it uses less digits than its factorization.

22102020220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436284.

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

Adding to 22102020220021 its reverse (12002202020122), we get a palindrome (34104222240143).

The spelling of 22102020220021 in words is "twenty-two trillion, one hundred two billion, twenty million, two hundred twenty thousand, twenty-one".