22220101122021 has 64 divisors (see below), whose sum is σ = 36756642723840. Its totient is φ = 13153297000320.

The previous prime is 22220101122007. The next prime is 22220101122029. The reversal of 22220101122021 is 12022110102222.

It is a happy number.

22220101122021 is a `hidden beast` number, since 222 + 201 + 0 + 1 + 1 + 220 + 21 = 666.

It is not a de Polignac number, because 22220101122021 - 2⁹ = 22220101121509 is a prime.

It is a super-2 number, since 2×22220101122021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22220101121985 and 22220101122003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220101122029) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2741931 + ... + 7208216.

It is an arithmetic number, because the mean of its divisors is an integer number (574322542560).

Almost surely, 2^{22220101122021} is an apocalyptic number.

It is an amenable number.

22220101122021 is a deficient number, since it is larger than the sum of its proper divisors (14536541601819).

22220101122021 is a wasteful number, since it uses less digits than its factorization.

22220101122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9950343 (or 9950337 counting only the distinct ones).

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

Adding to 22220101122021 its reverse (12022110102222), we get a palindrome (34242211224243).

The spelling of 22220101122021 in words is "twenty-two trillion, two hundred twenty billion, one hundred one million, one hundred twenty-two thousand, twenty-one".