21021303022 has 32 divisors (see below), whose sum is σ = 33067077120. Its totient is φ = 10009839840.

The previous prime is 21021302971. The next prime is 21021303041. The reversal of 21021303022 is 22030312012.

It is a junction number, because it is equal to n+sod(n) for n = 21021302987 and 21021303005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1260583 + ... + 1277149.

It is an arithmetic number, because the mean of its divisors is an integer number (1033346160).

Almost surely, 2^21021303022 is an apocalyptic number.

21021303022 is a deficient number, since it is larger than the sum of its proper divisors (12045774098).

21021303022 is a wasteful number, since it uses less digits than its factorization.

21021303022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16896.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21021303022 its reverse (22030312012), we get a palindrome (43051615034).

The spelling of 21021303022 in words is "twenty-one billion, twenty-one million, three hundred three thousand, twenty-two".