121110009975 has 96 divisors (see below), whose sum is σ = 224034857280. Its totient is φ = 64143360000.

The previous prime is 121110009973. The next prime is 121110010031. The reversal of 121110009975 is 579900011121.

It is not a de Polignac number, because 121110009975 - 2¹ = 121110009973 is a prime.

It is a super-2 number, since 2×121110009975² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121110009973) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 69562605 + ... + 69564345.

It is an arithmetic number, because the mean of its divisors is an integer number (2333696430).

Almost surely, 2^121110009975 is an apocalyptic number.

121110009975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121110009975 is a deficient number, since it is larger than the sum of its proper divisors (102924847305).

121110009975 is a wasteful number, since it uses less digits than its factorization.

121110009975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2418 (or 2407 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 36.

The spelling of 121110009975 in words is "one hundred twenty-one billion, one hundred ten million, nine thousand, nine hundred seventy-five".