21032121022 has 48 divisors (see below), whose sum is σ = 36864248400. Its totient is φ = 8967024000.

The previous prime is 21032120987. The next prime is 21032121029. The reversal of 21032121022 is 22012123012.

It is a happy number.

It is a super-2 number, since 2×21032121022² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21032120987 and 21032121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032121029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 441754 + ... + 487042.

It is an arithmetic number, because the mean of its divisors is an integer number (768005175).

Almost surely, 2^21032121022 is an apocalyptic number.

21032121022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21032121022 is a deficient number, since it is larger than the sum of its proper divisors (15832127378).

21032121022 is a wasteful number, since it uses less digits than its factorization.

21032121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45433 (or 45422 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21032121022 its reverse (22012123012), we get a palindrome (43044244034).

The spelling of 21032121022 in words is "twenty-one billion, thirty-two million, one hundred twenty-one thousand, twenty-two".