121029987935 has 32 divisors (see below), whose sum is σ = 166247951040. Its totient is φ = 83998881792.

The previous prime is 121029987913. The next prime is 121029987959. The reversal of 121029987935 is 539789920121.

It is a cyclic number.

It is not a de Polignac number, because 121029987935 - 2¹² = 121029983839 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 952964 + ... + 1072473.

It is an arithmetic number, because the mean of its divisors is an integer number (5195248470).

Almost surely, 2^121029987935 is an apocalyptic number.

121029987935 is a deficient number, since it is larger than the sum of its proper divisors (45217963105).

121029987935 is a wasteful number, since it uses less digits than its factorization.

121029987935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025515.

The product of its (nonzero) digits is 2449440, while the sum is 56.

The spelling of 121029987935 in words is "one hundred twenty-one billion, twenty-nine million, nine hundred eighty-seven thousand, nine hundred thirty-five".