220112031251 has 4 divisors (see below), whose sum is σ = 251556607152. Its totient is φ = 188667455352.

The previous prime is 220112031211. The next prime is 220112031259. The reversal of 220112031251 is 152130211022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220112031251 - 2³⁴ = 202932162067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220112031259) 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, 15722287940 + ... + 15722287953.

It is an arithmetic number, because the mean of its divisors is an integer number (62889151788).

Almost surely, 2^220112031251 is an apocalyptic number.

220112031251 is a deficient number, since it is larger than the sum of its proper divisors (31444575901).

220112031251 is an equidigital number, since it uses as much as digits as its factorization.

220112031251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31444575900.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 220112031251 its reverse (152130211022), we get a palindrome (372242242273).

The spelling of 220112031251 in words is "two hundred twenty billion, one hundred twelve million, thirty-one thousand, two hundred fifty-one".