21210022101012 has 24 divisors (see below), whose sum is σ = 49492034169312. Its totient is φ = 7069724138400.

The previous prime is 21210022101001. The next prime is 21210022101041. The reversal of 21210022101012 is 21010122001212.

It is a junction number, because it is equal to n+sod(n) for n = 21210022100982 and 21210022101000.

It is a congruent number.

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, 35091439 + ... + 35690742.

It is an arithmetic number, because the mean of its divisors is an integer number (2062168090388).

Almost surely, 2^{21210022101012} is an apocalyptic number.

It is an amenable number.

21210022101012 is an abundant number, since it is smaller than the sum of its proper divisors (28282012068300).

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

21210022101012 is a wasteful number, since it uses less digits than its factorization.

21210022101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70807159 (or 70807157 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21210022101012 its reverse (21010122001212), we get a palindrome (42220144102224).

The spelling of 21210022101012 in words is "twenty-one trillion, two hundred ten billion, twenty-two million, one hundred one thousand, twelve".