22212242140 has 48 divisors (see below), whose sum is σ = 52527734784. Its totient is φ = 7816622400.

The previous prime is 22212242119. The next prime is 22212242147. The reversal of 22212242140 is 4124221222.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212242147) 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, 1621644 + ... + 1635283.

It is an arithmetic number, because the mean of its divisors is an integer number (1094327808).

Almost surely, 2^22212242140 is an apocalyptic number.

22212242140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22212242140 is an abundant number, since it is smaller than the sum of its proper divisors (30315492644).

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

22212242140 is a wasteful number, since it uses less digits than its factorization.

22212242140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256978 (or 3256976 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 22212242140 its reverse (4124221222), we get a palindrome (26336463362).

The spelling of 22212242140 in words is "twenty-two billion, two hundred twelve million, two hundred forty-two thousand, one hundred forty".