22142235405212 has 48 divisors (see below), whose sum is σ = 41851907832000. Its totient is φ = 10189543564800.

The previous prime is 22142235405197. The next prime is 22142235405221. The reversal of 22142235405212 is 21250453224122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372929864 + ... + 372989232.

It is an arithmetic number, because the mean of its divisors is an integer number (871914746500).

Almost surely, 2^{22142235405212} is an apocalyptic number.

It is an amenable number.

22142235405212 is a deficient number, since it is larger than the sum of its proper divisors (19709672426788).

22142235405212 is a wasteful number, since it uses less digits than its factorization.

22142235405212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80286 (or 80284 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 22142235405212 its reverse (21250453224122), we get a palindrome (43392688629334).

The spelling of 22142235405212 in words is "twenty-two trillion, one hundred forty-two billion, two hundred thirty-five million, four hundred five thousand, two hundred twelve".