10142222251 has 4 divisors (see below), whose sum is σ = 11591111152. Its totient is φ = 8693333352.

The previous prime is 10142222221. The next prime is 10142222257. The reversal of 10142222251 is 15222224101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15222224101 = 7 ⋅2174603443.

It is a cyclic number.

It is not a de Polignac number, because 10142222251 - 2²³ = 10133833643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10142222257) 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, 724444440 + ... + 724444453.

It is an arithmetic number, because the mean of its divisors is an integer number (2897777788).

Almost surely, 2^10142222251 is an apocalyptic number.

10142222251 is a deficient number, since it is larger than the sum of its proper divisors (1448888901).

10142222251 is an equidigital number, since it uses as much as digits as its factorization.

10142222251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448888900.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 10142222251 its reverse (15222224101), we get a palindrome (25364446352).

The spelling of 10142222251 in words is "ten billion, one hundred forty-two million, two hundred twenty-two thousand, two hundred fifty-one".