121054321115 has 64 divisors (see below), whose sum is σ = 185288463360. Its totient is φ = 73847047680.

The previous prime is 121054321093. The next prime is 121054321181. The reversal of 121054321115 is 511123450121.

It is not a de Polignac number, because 121054321115 - 2⁸ = 121054320859 is a prime.

It is a super-2 number, since 2×121054321115² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7526312 + ... + 7542378.

It is an arithmetic number, because the mean of its divisors is an integer number (2895132240).

Almost surely, 2^121054321115 is an apocalyptic number.

121054321115 is a deficient number, since it is larger than the sum of its proper divisors (64234142245).

121054321115 is a wasteful number, since it uses less digits than its factorization.

121054321115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16692.

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 121054321115 its reverse (511123450121), we get a palindrome (632177771236).

The spelling of 121054321115 in words is "one hundred twenty-one billion, fifty-four million, three hundred twenty-one thousand, one hundred fifteen".