22102042242 has 32 divisors (see below), whose sum is σ = 50557151232. Its totient is φ = 6310094544.

The previous prime is 22102042229. The next prime is 22102042247. The reversal of 22102042242 is 24224020122.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (22102042247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142548 + ... + 254015.

It is an arithmetic number, because the mean of its divisors is an integer number (1579910976).

Almost surely, 2^22102042242 is an apocalyptic number.

22102042242 is an abundant number, since it is smaller than the sum of its proper divisors (28455108990).

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

22102042242 is a wasteful number, since it uses less digits than its factorization.

22102042242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397902.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 22102042242 its reverse (24224020122), we get a palindrome (46326062364).

The spelling of 22102042242 in words is "twenty-two billion, one hundred two million, forty-two thousand, two hundred forty-two".