121420032113 has 4 divisors (see below), whose sum is σ = 126699163968. Its totient is φ = 116140900260.

The previous prime is 121420032101. The next prime is 121420032119. The reversal of 121420032113 is 311230024121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121420032113 - 2⁸ = 121420031857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121420032119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2639565893 + ... + 2639565938.

It is an arithmetic number, because the mean of its divisors is an integer number (31674790992).

Almost surely, 2^121420032113 is an apocalyptic number.

It is an amenable number.

121420032113 is a deficient number, since it is larger than the sum of its proper divisors (5279131855).

121420032113 is an equidigital number, since it uses as much as digits as its factorization.

121420032113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5279131854.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121420032113 its reverse (311230024121), we get a palindrome (432650056234).

The spelling of 121420032113 in words is "one hundred twenty-one billion, four hundred twenty million, thirty-two thousand, one hundred thirteen".