201021100221012 has 96 divisors (see below), whose sum is σ = 510501675422592. Its totient is φ = 61308208152576.

The previous prime is 201021100220987. The next prime is 201021100221103. The reversal of 201021100221012 is 210122001120102.

It is a junction number, because it is equal to n+sod(n) for n = 201021100220982 and 201021100221000.

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, 2671533 + ... + 20228180.

It is an arithmetic number, because the mean of its divisors is an integer number (5317725785652).

Almost surely, 2^{201021100221012} is an apocalyptic number.

It is an amenable number.

201021100221012 is an abundant number, since it is smaller than the sum of its proper divisors (309480575201580).

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

201021100221012 is a wasteful number, since it uses less digits than its factorization.

201021100221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22900937 (or 22900935 counting only the distinct ones).

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

Adding to 201021100221012 its reverse (210122001120102), we get a palindrome (411143101341114).

The spelling of 201021100221012 in words is "two hundred one trillion, twenty-one billion, one hundred million, two hundred twenty-one thousand, twelve".