10201011212121 has 16 divisors (see below), whose sum is σ = 14104573202304. Its totient is φ = 6552630653184.

The previous prime is 10201011212101. The next prime is 10201011212131. The reversal of 10201011212121 is 12121211010201.

It is a happy number.

It is not a de Polignac number, because 10201011212121 - 2⁵ = 10201011212089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10201011212121.

It is not an unprimeable number, because it can be changed into a prime (10201011212101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446109936 + ... + 446132801.

It is an arithmetic number, because the mean of its divisors is an integer number (881535825144).

Almost surely, 2^{10201011212121} is an apocalyptic number.

It is an amenable number.

10201011212121 is a deficient number, since it is larger than the sum of its proper divisors (3903561990183).

10201011212121 is a wasteful number, since it uses less digits than its factorization.

10201011212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892242880.

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

Adding to 10201011212121 its reverse (12121211010201), we get a palindrome (22322222222322).

The spelling of 10201011212121 in words is "ten trillion, two hundred one billion, eleven million, two hundred twelve thousand, one hundred twenty-one".