10201021122121 has 16 divisors (see below), whose sum is σ = 10375081805440. Its totient is φ = 10027183259520.

The previous prime is 10201021122101. The next prime is 10201021122191. The reversal of 10201021122121 is 12122112010201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10201021122121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10201021122095 and 10201021122104.

It is not an unprimeable number, because it can be changed into a prime (10201021122101) 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, 771687250 + ... + 771700468.

It is an arithmetic number, because the mean of its divisors is an integer number (648442612840).

Almost surely, 2^{10201021122121} is an apocalyptic number.

It is an amenable number.

10201021122121 is a deficient number, since it is larger than the sum of its proper divisors (174060683319).

10201021122121 is a wasteful number, since it uses less digits than its factorization.

10201021122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20656.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10201021122121 its reverse (12122112010201), we get a palindrome (22323133132322).

The spelling of 10201021122121 in words is "ten trillion, two hundred one billion, twenty-one million, one hundred twenty-two thousand, one hundred twenty-one".