22102303220021 has 16 divisors (see below), whose sum is σ = 22719916302336. Its totient is φ = 21492141355776.

The previous prime is 22102303219943. The next prime is 22102303220069. The reversal of 22102303220021 is 12002230320122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22102303220021 - 2²⁶ = 22102236111157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22102303219975 and 22102303220002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102303228021) 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, 114790796 + ... + 114983178.

It is an arithmetic number, because the mean of its divisors is an integer number (1419994768896).

Almost surely, 2^{22102303220021} is an apocalyptic number.

It is an amenable number.

22102303220021 is a deficient number, since it is larger than the sum of its proper divisors (617613082315).

22102303220021 is a wasteful number, since it uses less digits than its factorization.

22102303220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211732.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22102303220021 its reverse (12002230320122), we get a palindrome (34104533540143).

The spelling of 22102303220021 in words is "twenty-two trillion, one hundred two billion, three hundred three million, two hundred twenty thousand, twenty-one".