21122021032 has 32 divisors (see below), whose sum is σ = 45591865920. Its totient is φ = 8986216320.

The previous prime is 21122021029. The next prime is 21122021087. The reversal of 21122021032 is 23012022112.

It is a happy number.

It is a super-2 number, since 2×21122021032² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21122020997 and 21122021015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1368894 + ... + 1384237.

It is an arithmetic number, because the mean of its divisors is an integer number (1424745810).

Almost surely, 2^21122021032 is an apocalyptic number.

It is an amenable number.

21122021032 is an abundant number, since it is smaller than the sum of its proper divisors (24469844888).

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

21122021032 is a wasteful number, since it uses less digits than its factorization.

21122021032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753281 (or 2753277 counting only the distinct ones).

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

Adding to 21122021032 its reverse (23012022112), we get a palindrome (44134043144).

The spelling of 21122021032 in words is "twenty-one billion, one hundred twenty-two million, twenty-one thousand, thirty-two".