21210021010022 has 64 divisors (see below), whose sum is σ = 35477984997504. Its totient is φ = 9449662279680.

The previous prime is 21210021009979. The next prime is 21210021010043. The reversal of 21210021010022 is 22001012001212.

It is a super-2 number, since 2×21210021010022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21210021009979 and 21210021010006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17887418 + ... + 19036274.

It is an arithmetic number, because the mean of its divisors is an integer number (554343515586).

Almost surely, 2^{21210021010022} is an apocalyptic number.

21210021010022 is a deficient number, since it is larger than the sum of its proper divisors (14267963987482).

21210021010022 is a wasteful number, since it uses less digits than its factorization.

21210021010022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149153.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21210021010022 its reverse (22001012001212), we get a palindrome (43211033011234).

The spelling of 21210021010022 in words is "twenty-one trillion, two hundred ten billion, twenty-one million, ten thousand, twenty-two".