121435214397 has 16 divisors (see below), whose sum is σ = 185272894080. Its totient is φ = 69305766912.

The previous prime is 121435214389. The next prime is 121435214399. The reversal of 121435214397 is 793412534121.

It is not a de Polignac number, because 121435214397 - 2³ = 121435214389 is a prime.

It is a super-2 number, since 2×121435214397² (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 (121435214399) 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 15 ways as a sum of consecutive naturals, for example, 3556948 + ... + 3590925.

It is an arithmetic number, because the mean of its divisors is an integer number (11579555880).

Almost surely, 2^121435214397 is an apocalyptic number.

It is an amenable number.

121435214397 is a deficient number, since it is larger than the sum of its proper divisors (63837679683).

121435214397 is an equidigital number, since it uses as much as digits as its factorization.

121435214397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7148692.

The product of its digits is 181440, while the sum is 42.

The spelling of 121435214397 in words is "one hundred twenty-one billion, four hundred thirty-five million, two hundred fourteen thousand, three hundred ninety-seven".