222120220011021 has 64 divisors (see below), whose sum is σ = 338655409152000. Its totient is φ = 143843940108288.

The previous prime is 222120220010837. The next prime is 222120220011029. The reversal of 222120220011021 is 120110022021222.

It is a happy number.

222120220011021 is a `hidden beast` number, since 222 + 120 + 220 + 0 + 1 + 102 + 1 = 666.

It is not a de Polignac number, because 222120220011021 - 2²⁶ = 222120152902157 is a prime.

It is a super-2 number, since 2×222120220011021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222120220010985 and 222120220011003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120220011029) 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, 31054905 + ... + 37531953.

It is an arithmetic number, because the mean of its divisors is an integer number (5291490768000).

Almost surely, 2^{222120220011021} is an apocalyptic number.

It is an amenable number.

222120220011021 is a deficient number, since it is larger than the sum of its proper divisors (116535189140979).

222120220011021 is a wasteful number, since it uses less digits than its factorization.

222120220011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6477395 (or 6477389 counting only the distinct ones).

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

Adding to 222120220011021 its reverse (120110022021222), we get a palindrome (342230242032243).

The spelling of 222120220011021 in words is "two hundred twenty-two trillion, one hundred twenty billion, two hundred twenty million, eleven thousand, twenty-one".