21210332022 has 48 divisors (see below), whose sum is σ = 50354471232. Its totient is φ = 6399045360.

The previous prime is 21210332009. The next prime is 21210332051. The reversal of 21210332022 is 22023301212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21210331986 and 21210332004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191008 + ... + 280899.

It is an arithmetic number, because the mean of its divisors is an integer number (1049051484).

Almost surely, 2^21210332022 is an apocalyptic number.

21210332022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21210332022 is an abundant number, since it is smaller than the sum of its proper divisors (29144139210).

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

21210332022 is a wasteful number, since it uses less digits than its factorization.

21210332022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472153 (or 472150 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21210332022 its reverse (22023301212), we get a palindrome (43233633234).

The spelling of 21210332022 in words is "twenty-one billion, two hundred ten million, three hundred thirty-two thousand, twenty-two".