222120200121001 has 32 divisors (see below), whose sum is σ = 277442869068288. Its totient is φ = 173134597063680.

The previous prime is 222120200120989. The next prime is 222120200121019. The reversal of 222120200121001 is 100121002021222.

It is a happy number.

It is not a de Polignac number, because 222120200121001 - 2¹³ = 222120200112809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222120200121301) 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, 4873210 + ... + 21633043.

It is an arithmetic number, because the mean of its divisors is an integer number (8670089658384).

Almost surely, 2^{222120200121001} is an apocalyptic number.

It is an amenable number.

222120200121001 is a deficient number, since it is larger than the sum of its proper divisors (55322668947287).

222120200121001 is a wasteful number, since it uses less digits than its factorization.

222120200121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26507641.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222120200121001 its reverse (100121002021222), we get a palindrome (322241202142223).

The spelling of 222120200121001 in words is "two hundred twenty-two trillion, one hundred twenty billion, two hundred million, one hundred twenty-one thousand, one".