201121012210101 has 8 divisors (see below), whose sum is σ = 268161422962944. Its totient is φ = 134080638132000.

The previous prime is 201121012210043. The next prime is 201121012210121. The reversal of 201121012210101 is 101012210121102.

It is a happy number.

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

It is not a de Polignac number, because 201121012210101 - 2¹³ = 201121012201909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201121012210121) 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, 8480476 + ... + 21775226.

It is an arithmetic number, because the mean of its divisors is an integer number (33520177870368).

Almost surely, 2^{201121012210101} is an apocalyptic number.

It is an amenable number.

201121012210101 is a deficient number, since it is larger than the sum of its proper divisors (67040410752843).

201121012210101 is a wasteful number, since it uses less digits than its factorization.

201121012210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18337371.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201121012210101 its reverse (101012210121102), we get a palindrome (302133222331203).

The spelling of 201121012210101 in words is "two hundred one trillion, one hundred twenty-one billion, twelve million, two hundred ten thousand, one hundred one".