22212532302251 has 4 divisors (see below), whose sum is σ = 22729102820952. Its totient is φ = 21695961783552.

The previous prime is 22212532302241. The next prime is 22212532302277. The reversal of 22212532302251 is 15220323521222.

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 22212532302251 - 2³⁰ = 22211458560427 is a prime.

It is a super-2 number, since 2×22212532302251² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22212532302241) 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, 258285259286 + ... + 258285259371.

It is an arithmetic number, because the mean of its divisors is an integer number (5682275705238).

Almost surely, 2^{22212532302251} is an apocalyptic number.

22212532302251 is a deficient number, since it is larger than the sum of its proper divisors (516570518701).

22212532302251 is an equidigital number, since it uses as much as digits as its factorization.

22212532302251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516570518700.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 22212532302251 its reverse (15220323521222), we get a palindrome (37432855823473).

The spelling of 22212532302251 in words is "twenty-two trillion, two hundred twelve billion, five hundred thirty-two million, three hundred two thousand, two hundred fifty-one".