121021111220101 has 8 divisors (see below), whose sum is σ = 127396135539680. Its totient is φ = 114646636115568.

The previous prime is 121021111220071. The next prime is 121021111220153. The reversal of 121021111220101 is 101022111120121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121021111220101 - 2¹¹ = 121021111218053 is a prime.

It is a super-2 number, since 2×121021111220101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021111220171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136851411 + ... + 137732896.

It is an arithmetic number, because the mean of its divisors is an integer number (15924516942460).

Almost surely, 2^{121021111220101} is an apocalyptic number.

It is an amenable number.

121021111220101 is a deficient number, since it is larger than the sum of its proper divisors (6375024319579).

121021111220101 is a wasteful number, since it uses less digits than its factorization.

121021111220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274607523.

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

Adding to 121021111220101 its reverse (101022111120121), we get a palindrome (222043222340222).

The spelling of 121021111220101 in words is "one hundred twenty-one trillion, twenty-one billion, one hundred eleven million, two hundred twenty thousand, one hundred one".