222222021000121 has 32 divisors (see below), whose sum is σ = 239683347509760. Its totient is φ = 205603277478144.

The previous prime is 222222021000101. The next prime is 222222021000169. The reversal of 222222021000121 is 121000120222222.

It is a cyclic number.

It is not a de Polignac number, because 222222021000121 - 2³⁹ = 221672265186233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222222021000101) 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, 1250154576 + ... + 1250332318.

It is an arithmetic number, because the mean of its divisors is an integer number (7490104609680).

Almost surely, 2^{222222021000121} is an apocalyptic number.

It is an amenable number.

222222021000121 is a deficient number, since it is larger than the sum of its proper divisors (17461326509639).

222222021000121 is a wasteful number, since it uses less digits than its factorization.

222222021000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196785.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222222021000121 its reverse (121000120222222), we get a palindrome (343222141222343).

The spelling of 222222021000121 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, twenty-one million, one hundred twenty-one", and thus it is an aban number.