22102029642 has 128 divisors (see below), whose sum is σ = 58494412800. Its totient is φ = 5438378880.

The previous prime is 22102029619. The next prime is 22102029659. The reversal of 22102029642 is 24692020122.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1051734 + ... + 1072542.

It is an arithmetic number, because the mean of its divisors is an integer number (456987600).

Almost surely, 2^22102029642 is an apocalyptic number.

22102029642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 22102029642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29247206400).

22102029642 is an abundant number, since it is smaller than the sum of its proper divisors (36392383158).

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

22102029642 is a wasteful number, since it uses less digits than its factorization.

22102029642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20873 (or 20851 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 22102029642 its reverse (24692020122), we get a palindrome (46794049764).

The spelling of 22102029642 in words is "twenty-two billion, one hundred two million, twenty-nine thousand, six hundred forty-two".