22215222251222 has 144 divisors (see below), whose sum is σ = 47781208599552. Its totient is φ = 7642119925440.

The previous prime is 22215222251207. The next prime is 22215222251237.

22215222251222 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (22215222251207) and next prime (22215222251237).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1539323 + ... + 6841049.

It is an arithmetic number, because the mean of its divisors is an integer number (331813948608).

Almost surely, 2^{22215222251222} is an apocalyptic number.

22215222251222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22215222251222 is an abundant number, since it is smaller than the sum of its proper divisors (25565986348330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22215222251222 is a wasteful number, since it uses less digits than its factorization.

22215222251222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5301803 (or 5301783 counting only the distinct ones).

The product of its digits is 25600, while the sum is 32.

It can be divided in two parts, 2221522 and 2251222, that added together give a palindrome (4472744).

The spelling of 22215222251222 in words is "twenty-two trillion, two hundred fifteen billion, two hundred twenty-two million, two hundred fifty-one thousand, two hundred twenty-two".