22203720042 has 64 divisors (see below), whose sum is σ = 52585666560. Its totient is φ = 6118691904.

The previous prime is 22203720041. The next prime is 22203720053. The reversal of 22203720042 is 24002730222.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22203719994 and 22203720021.

It is not an unprimeable number, because it can be changed into a prime (22203720041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46803 + ... + 215865.

It is an arithmetic number, because the mean of its divisors is an integer number (821651040).

Almost surely, 2^22203720042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22203720042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26292833280).

22203720042 is an abundant number, since it is smaller than the sum of its proper divisors (30381946518).

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

22203720042 is a wasteful number, since it uses less digits than its factorization.

22203720042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169187.

The product of its (nonzero) digits is 2688, while the sum is 24.

The spelling of 22203720042 in words is "twenty-two billion, two hundred three million, seven hundred twenty thousand, forty-two".