201012012111021 has 16 divisors (see below), whose sum is σ = 272559181070400. Its totient is φ = 131736434289408.

The previous prime is 201012012110989. The next prime is 201012012111037. The reversal of 201012012111021 is 120111210210102.

It is a happy number.

It is not a de Polignac number, because 201012012111021 - 2⁵ = 201012012110989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201012012121021) 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, 155668725 + ... + 156954693.

It is an arithmetic number, because the mean of its divisors is an integer number (17034948816900).

Almost surely, 2^{201012012111021} is an apocalyptic number.

It is an amenable number.

201012012111021 is a deficient number, since it is larger than the sum of its proper divisors (71547168959379).

201012012111021 is a wasteful number, since it uses less digits than its factorization.

201012012111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169148.

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

Adding to 201012012111021 its reverse (120111210210102), we get a palindrome (321123222321123).

The spelling of 201012012111021 in words is "two hundred one trillion, twelve billion, twelve million, one hundred eleven thousand, twenty-one".