21850022022 has 16 divisors (see below), whose sum is σ = 43849194480. Its totient is φ = 7258482272.

The previous prime is 21850022009. The next prime is 21850022039. The reversal of 21850022022 is 22022005812.

It is a junction number, because it is equal to n+sod(n) for n = 21850021983 and 21850022001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6212697 + ... + 6216212.

It is an arithmetic number, because the mean of its divisors is an integer number (2740574655).

Almost surely, 2^21850022022 is an apocalyptic number.

21850022022 is an abundant number, since it is smaller than the sum of its proper divisors (21999172458).

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

21850022022 is a wasteful number, since it uses less digits than its factorization.

21850022022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12429207.

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 21850022022 its reverse (22022005812), we get a palindrome (43872027834).

The spelling of 21850022022 in words is "twenty-one billion, eight hundred fifty million, twenty-two thousand, twenty-two".