222120131021 has 4 divisors (see below), whose sum is σ = 222125400000. Its totient is φ = 222114862044.

The previous prime is 222120130957. The next prime is 222120131029. The reversal of 222120131021 is 120131021222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222120131021 - 2⁶ = 222120130957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120131029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2570741 + ... + 2655738.

It is an arithmetic number, because the mean of its divisors is an integer number (55531350000).

Almost surely, 2^222120131021 is an apocalyptic number.

It is an amenable number.

222120131021 is a deficient number, since it is larger than the sum of its proper divisors (5268979).

222120131021 is an equidigital number, since it uses as much as digits as its factorization.

222120131021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5268978.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 222120131021 its reverse (120131021222), we get a palindrome (342251152243).

The spelling of 222120131021 in words is "two hundred twenty-two billion, one hundred twenty million, one hundred thirty-one thousand, twenty-one".