201102010021 has 16 divisors (see below), whose sum is σ = 221901609600. Its totient is φ = 180729662400.

The previous prime is 201102010013. The next prime is 201102010027. The reversal of 201102010021 is 120010201102.

It is a cyclic number.

It is not a de Polignac number, because 201102010021 - 2³ = 201102010013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201102010027) 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, 335331 + ... + 717391.

It is an arithmetic number, because the mean of its divisors is an integer number (13868850600).

Almost surely, 2^201102010021 is an apocalyptic number.

It is an amenable number.

201102010021 is a deficient number, since it is larger than the sum of its proper divisors (20799599579).

201102010021 is a wasteful number, since it uses less digits than its factorization.

201102010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382620.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 201102010021 its reverse (120010201102), we get a palindrome (321112211123).

The spelling of 201102010021 in words is "two hundred one billion, one hundred two million, ten thousand, twenty-one".