121111012100101 has 16 divisors (see below), whose sum is σ = 123737107403520. Its totient is φ = 118486975521280.

The previous prime is 121111012100053. The next prime is 121111012100161. The reversal of 121111012100101 is 101001210111121.

It is a cyclic number.

It is not a de Polignac number, because 121111012100101 - 2¹⁷ = 121111011969029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121111012100161) 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, 2842226286 + ... + 2842268896.

It is an arithmetic number, because the mean of its divisors is an integer number (7733569212720).

Almost surely, 2^{121111012100101} is an apocalyptic number.

It is an amenable number.

121111012100101 is a deficient number, since it is larger than the sum of its proper divisors (2626095303419).

121111012100101 is a wasteful number, since it uses less digits than its factorization.

121111012100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65324.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 121111012100101 its reverse (101001210111121), we get a palindrome (222112222211222).

The spelling of 121111012100101 in words is "one hundred twenty-one trillion, one hundred eleven billion, twelve million, one hundred thousand, one hundred one".