36912120121 has 4 divisors (see below), whose sum is σ = 36913709952. Its totient is φ = 36910530292.

The previous prime is 36912120107. The next prime is 36912120131. The reversal of 36912120121 is 12102121963.

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 a de Polignac number, because none of the positive numbers 2^k-36912120121 is a prime.

It is a super-2 number, since 2×36912120121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36912120121.

It is not an unprimeable number, because it can be changed into a prime (36912120131) 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, 759565 + ... + 806698.

It is an arithmetic number, because the mean of its divisors is an integer number (9228427488).

Almost surely, 2^36912120121 is an apocalyptic number.

It is an amenable number.

36912120121 is a deficient number, since it is larger than the sum of its proper divisors (1589831).

36912120121 is a wasteful number, since it uses less digits than its factorization.

36912120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589830.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 36912120121 in words is "thirty-six billion, nine hundred twelve million, one hundred twenty thousand, one hundred twenty-one".