121289982121 has 8 divisors (see below), whose sum is σ = 151218679104. Its totient is φ = 94511674320.

The previous prime is 121289982113. The next prime is 121289982173.

It is a happy number.

121289982121 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121289982121 - 2³ = 121289982113 is a prime.

It is a super-2 number, since 2×121289982121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121289982101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787597210 + ... + 787597363.

It is an arithmetic number, because the mean of its divisors is an integer number (18902334888).

Almost surely, 2^121289982121 is an apocalyptic number.

121289982121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121289982121 is a deficient number, since it is larger than the sum of its proper divisors (29928696983).

121289982121 is a wasteful number, since it uses less digits than its factorization.

121289982121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575194591.

The product of its digits is 82944, while the sum is 46.

The spelling of 121289982121 in words is "one hundred twenty-one billion, two hundred eighty-nine million, nine hundred eighty-two thousand, one hundred twenty-one".