201001022102101 has 8 divisors (see below), whose sum is σ = 216476532135864. Its totient is φ = 185527496775360.

The previous prime is 201001022102063. The next prime is 201001022102131. The reversal of 201001022102101 is 101201220100102.

It can be written as a sum of positive squares in 4 ways, for example, as 175561838001 + 200825460264100 = 419001^2 + 14171290^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201001022102101 - 2¹³ = 201001022093909 is a prime.

It is a super-2 number, since 2×201001022102101² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001022102131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495966406 + ... + 496371511.

It is an arithmetic number, because the mean of its divisors is an integer number (27059566516983).

Almost surely, 2^{201001022102101} is an apocalyptic number.

It is an amenable number.

201001022102101 is a deficient number, since it is larger than the sum of its proper divisors (15475510033763).

201001022102101 is a wasteful number, since it uses less digits than its factorization.

201001022102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992353511.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201001022102101 its reverse (101201220100102), we get a palindrome (302202242202203).

The spelling of 201001022102101 in words is "two hundred one trillion, one billion, twenty-two million, one hundred two thousand, one hundred one".