121435214398 has 4 divisors (see below), whose sum is σ = 182152821600. Its totient is φ = 60717607198.

The previous prime is 121435214389. The next prime is 121435214399. The reversal of 121435214398 is 893412534121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 893412534121 = 23767 ⋅37590463.

It is a super-2 number, since 2×121435214398² (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 as a sum of consecutive naturals, namely, 30358803598 + ... + 30358803601.

It is an arithmetic number, because the mean of its divisors is an integer number (45538205400).

Almost surely, 2^121435214398 is an apocalyptic number.

121435214398 is a deficient number, since it is larger than the sum of its proper divisors (60717607202).

121435214398 is an equidigital number, since it uses as much as digits as its factorization.

121435214398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60717607201.

The product of its digits is 207360, while the sum is 43.

The spelling of 121435214398 in words is "one hundred twenty-one billion, four hundred thirty-five million, two hundred fourteen thousand, three hundred ninety-eight".