201102120021021 has 16 divisors (see below), whose sum is σ = 271386446514624. Its totient is φ = 132443171656064.

The previous prime is 201102120020999. The next prime is 201102120021041. The reversal of 201102120021021 is 120120021201102.

It is a cyclic number.

It is not a de Polignac number, because 201102120021021 - 2²⁷ = 201101985803293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201102120021041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25928256 + ... + 32779241.

It is an arithmetic number, because the mean of its divisors is an integer number (16961652907164).

Almost surely, 2^{201102120021021} is an apocalyptic number.

It is an amenable number.

201102120021021 is a deficient number, since it is larger than the sum of its proper divisors (70284326493603).

201102120021021 is a wasteful number, since it uses less digits than its factorization.

201102120021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58721340.

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

Adding to 201102120021021 its reverse (120120021201102), we get a palindrome (321222141222123).

The spelling of 201102120021021 in words is "two hundred one trillion, one hundred two billion, one hundred twenty million, twenty-one thousand, twenty-one".