11920120202 has 4 divisors (see below), whose sum is σ = 17880180306. Its totient is φ = 5960060100.

The previous prime is 11920120181. The next prime is 11920120253. The reversal of 11920120202 is 20202102911.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20202102911 = 151 ⋅133788761.

It can be written as a sum of positive squares in only one way, i.e., 11689718161 + 230402041 = 108119^2 + 15179^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2980030049 + ... + 2980030052.

Almost surely, 2^11920120202 is an apocalyptic number.

11920120202 is a deficient number, since it is larger than the sum of its proper divisors (5960060104).

11920120202 is an equidigital number, since it uses as much as digits as its factorization.

11920120202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5960060103.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 11920120202 in words is "eleven billion, nine hundred twenty million, one hundred twenty thousand, two hundred two".