121072699 has 4 divisors (see below), whose sum is σ = 132079320. Its totient is φ = 110066080.

The previous prime is 121072619. The next prime is 121072717. The reversal of 121072699 is 996270121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121072699 - 2²⁵ = 87518267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121072619) 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 3 ways as a sum of consecutive naturals, for example, 5503294 + ... + 5503315.

It is an arithmetic number, because the mean of its divisors is an integer number (33019830).

Almost surely, 2^121072699 is an apocalyptic number.

121072699 is a deficient number, since it is larger than the sum of its proper divisors (11006621).

121072699 is a wasteful number, since it uses less digits than its factorization.

121072699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11006620.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 121072699 is about 11003.3040037981. The cubic root of 121072699 is about 494.7077811353.

It can be divided in two parts, 121072 and 699, that added together give a triangular number (121771 = T₄₉₃).

The spelling of 121072699 in words is "one hundred twenty-one million, seventy-two thousand, six hundred ninety-nine".