222021200122221 has 32 divisors (see below), whose sum is σ = 309903506841600. Its totient is φ = 141211985947200.

The previous prime is 222021200122069. The next prime is 222021200122223. The reversal of 222021200122221 is 122221002120222.

222021200122221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222021200122221 - 2⁹ = 222021200121709 is a prime.

It is a super-2 number, since 2×222021200122221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222021200122223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92237626 + ... + 94614068.

It is an arithmetic number, because the mean of its divisors is an integer number (9684484588800).

Almost surely, 2^{222021200122221} is an apocalyptic number.

It is an amenable number.

222021200122221 is a deficient number, since it is larger than the sum of its proper divisors (87882306719379).

222021200122221 is a wasteful number, since it uses less digits than its factorization.

222021200122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390697.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 222021200122221 its reverse (122221002120222), we get a palindrome (344242202242443).

The spelling of 222021200122221 in words is "two hundred twenty-two trillion, twenty-one billion, two hundred million, one hundred twenty-two thousand, two hundred twenty-one".