11902001217 has 4 divisors (see below), whose sum is σ = 15869334960. Its totient is φ = 7934667476.

The previous prime is 11902001161. The next prime is 11902001231. The reversal of 11902001217 is 71210020911.

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 11902001217 - 2¹⁹ = 11901476929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11902001317) 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, 1983666867 + ... + 1983666872.

It is an arithmetic number, because the mean of its divisors is an integer number (3967333740).

Almost surely, 2^11902001217 is an apocalyptic number.

It is an amenable number.

11902001217 is a deficient number, since it is larger than the sum of its proper divisors (3967333743).

11902001217 is an equidigital number, since it uses as much as digits as its factorization.

11902001217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967333742.

The product of its (nonzero) digits is 252, while the sum is 24.

The spelling of 11902001217 in words is "eleven billion, nine hundred two million, one thousand, two hundred seventeen".