222221020011021 has 24 divisors (see below), whose sum is σ = 324165870264600. Its totient is φ = 146679693264000.

The previous prime is 222221020010981. The next prime is 222221020011037. The reversal of 222221020011021 is 120110020122222.

It is a happy number.

222221020011021 is a `hidden beast` number, since 2 + 222 + 210 + 200 + 1 + 10 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 93959483292900 + 128261536718121 = 9693270^2 + 11325261^2 .

It is not a de Polignac number, because 222221020011021 - 2⁷ = 222221020010893 is a prime.

It is a super-2 number, since 2×222221020011021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222221020010985 and 222221020011003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222221020015021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 182813155 + ... + 184024703.

It is an arithmetic number, because the mean of its divisors is an integer number (13506911261025).

Almost surely, 2^{222221020011021} is an apocalyptic number.

It is an amenable number.

222221020011021 is a deficient number, since it is larger than the sum of its proper divisors (101944850253579).

222221020011021 is a wasteful number, since it uses less digits than its factorization.

222221020011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413437 (or 1413434 counting only the distinct ones).

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

Adding to 222221020011021 its reverse (120110020122222), we get a palindrome (342331040133243).

The spelling of 222221020011021 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, twenty million, eleven thousand, twenty-one".