121415110551 has 36 divisors (see below), whose sum is σ = 204143277000. Its totient is φ = 69334882848.

The previous prime is 121415110547. The next prime is 121415110631. The reversal of 121415110551 is 155011514121.

121415110551 is a `hidden beast` number, since 1 + 2 + 141 + 511 + 0 + 5 + 5 + 1 = 666.

It is not a de Polignac number, because 121415110551 - 2² = 121415110547 is a prime.

It is a super-2 number, since 2×121415110551² (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 (121415110451) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 594240 + ... + 771978.

Almost surely, 2^121415110551 is an apocalyptic number.

121415110551 is a deficient number, since it is larger than the sum of its proper divisors (82728166449).

121415110551 is a wasteful number, since it uses less digits than its factorization.

121415110551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179308 (or 179298 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 27.

Adding to 121415110551 its reverse (155011514121), we get a palindrome (276426624672).

The spelling of 121415110551 in words is "one hundred twenty-one billion, four hundred fifteen million, one hundred ten thousand, five hundred fifty-one".