222120121021225 has 48 divisors (see below), whose sum is σ = 315419492931840. Its totient is φ = 151999592774400.

The previous prime is 222120121021193. The next prime is 222120121021313. The reversal of 222120121021225 is 522120121021222.

It is not a de Polignac number, because 222120121021225 - 2⁵ = 222120121021193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 222120121021225.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1199124115 + ... + 1199309335.

It is an arithmetic number, because the mean of its divisors is an integer number (6571239436080).

Almost surely, 2^{222120121021225} is an apocalyptic number.

222120121021225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222120121021225 is a deficient number, since it is larger than the sum of its proper divisors (93299371910615).

222120121021225 is a wasteful number, since it uses less digits than its factorization.

222120121021225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199210 (or 199205 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 222120121021225 its reverse (522120121021222), we get a palindrome (744240242042447).

The spelling of 222120121021225 in words is "two hundred twenty-two trillion, one hundred twenty billion, one hundred twenty-one million, twenty-one thousand, two hundred twenty-five".