21210010221112 has 16 divisors (see below), whose sum is σ = 40420716201000. Its totient is φ = 10431152567520.

The previous prime is 21210010221109. The next prime is 21210010221137. The reversal of 21210010221112 is 21112201001212.

It is a super-2 number, since 2×21210010221112² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21731567362 + ... + 21731568337.

Almost surely, 2^{21210010221112} is an apocalyptic number.

It is an amenable number.

21210010221112 is a deficient number, since it is larger than the sum of its proper divisors (19210705979888).

21210010221112 is a wasteful number, since it uses less digits than its factorization.

21210010221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43463135766 (or 43463135762 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21210010221112 its reverse (21112201001212), we get a palindrome (42322211222324).

The spelling of 21210010221112 in words is "twenty-one trillion, two hundred ten billion, ten million, two hundred twenty-one thousand, one hundred twelve".