121054220351 has 4 divisors (see below), whose sum is σ = 121071454392. Its totient is φ = 121036986312.

The previous prime is 121054220327. The next prime is 121054220387. The reversal of 121054220351 is 153022450121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121054220351 - 2²² = 121050026047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121054220351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121054220321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8606480 + ... + 8620533.

It is an arithmetic number, because the mean of its divisors is an integer number (30267863598).

Almost surely, 2^121054220351 is an apocalyptic number.

121054220351 is a deficient number, since it is larger than the sum of its proper divisors (17234041).

121054220351 is an equidigital number, since it uses as much as digits as its factorization.

121054220351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17234040.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 121054220351 its reverse (153022450121), we get a palindrome (274076670472).

The spelling of 121054220351 in words is "one hundred twenty-one billion, fifty-four million, two hundred twenty thousand, three hundred fifty-one".