10111020210121 has 16 divisors (see below), whose sum is σ = 10724653231488. Its totient is φ = 9499495968000.

The previous prime is 10111020210089. The next prime is 10111020210127. The reversal of 10111020210121 is 12101202011101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10111020210121 - 2⁵ = 10111020210089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10111020210127) 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, 26016196 + ... + 26401978.

It is an arithmetic number, because the mean of its divisors is an integer number (670290826968).

Almost surely, 2^{10111020210121} is an apocalyptic number.

It is an amenable number.

10111020210121 is a deficient number, since it is larger than the sum of its proper divisors (613633021367).

10111020210121 is a wasteful number, since it uses less digits than its factorization.

10111020210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388512.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10111020210121 its reverse (12101202011101), we get a palindrome (22212222221222).

The spelling of 10111020210121 in words is "ten trillion, one hundred eleven billion, twenty million, two hundred ten thousand, one hundred twenty-one".