101012201121021 has 16 divisors (see below), whose sum is σ = 134704732075200. Its totient is φ = 67330569633408.

The previous prime is 101012201120959. The next prime is 101012201121023. The reversal of 101012201121021 is 120121102210101.

It is a happy number.

It is not a de Polignac number, because 101012201121021 - 2⁷ = 101012201120893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101012201121023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 555565395 + ... + 555747183.

It is an arithmetic number, because the mean of its divisors is an integer number (8419045754700).

Almost surely, 2^{101012201121021} is an apocalyptic number.

It is an amenable number.

101012201121021 is a deficient number, since it is larger than the sum of its proper divisors (33692530954179).

101012201121021 is a wasteful number, since it uses less digits than its factorization.

101012201121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210748.

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

Adding to 101012201121021 its reverse (120121102210101), we get a palindrome (221133303331122).

The spelling of 101012201121021 in words is "one hundred one trillion, twelve billion, two hundred one million, one hundred twenty-one thousand, twenty-one".