201012021121 has 16 divisors (see below), whose sum is σ = 212890766400. Its totient is φ = 189266208768.

The previous prime is 201012021109. The next prime is 201012021127. The reversal of 201012021121 is 121120210102.

It is a cyclic number.

It is not a de Polignac number, because 201012021121 - 2⁹ = 201012020609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201012021127) 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, 2380065 + ... + 2463073.

It is an arithmetic number, because the mean of its divisors is an integer number (13305672900).

Almost surely, 2^201012021121 is an apocalyptic number.

It is an amenable number.

201012021121 is a deficient number, since it is larger than the sum of its proper divisors (11878745279).

201012021121 is a wasteful number, since it uses less digits than its factorization.

201012021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83808.

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

Adding to 201012021121 its reverse (121120210102), we get a palindrome (322132231223).

The spelling of 201012021121 in words is "two hundred one billion, twelve million, twenty-one thousand, one hundred twenty-one".