121111010120101 has 16 divisors (see below), whose sum is σ = 122850309149568. Its totient is φ = 119372647475200.

The previous prime is 121111010119999. The next prime is 121111010120161. The reversal of 121111010120101 is 101021010111121.

It is a cyclic number.

It is not a de Polignac number, because 121111010120101 - 2¹³ = 121111010111909 is a prime.

It is a super-2 number, since 2×121111010120101² (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 (121111010120161) 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, 5510796225 + ... + 5510818201.

It is an arithmetic number, because the mean of its divisors is an integer number (7678144321848).

Almost surely, 2^{121111010120101} is an apocalyptic number.

It is an amenable number.

121111010120101 is a deficient number, since it is larger than the sum of its proper divisors (1739299029467).

121111010120101 is an equidigital number, since it uses as much as digits as its factorization.

121111010120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39692.

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

Adding to 121111010120101 its reverse (101021010111121), we get a palindrome (222132020231222).

The spelling of 121111010120101 in words is "one hundred twenty-one trillion, one hundred eleven billion, ten million, one hundred twenty thousand, one hundred one".