11920201912 has 32 divisors (see below), whose sum is σ = 24100549200. Its totient is φ = 5508691200.

The previous prime is 11920201861. The next prime is 11920202003. The reversal of 11920201912 is 21910202911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 950139 + ... + 962602.

Almost surely, 2^11920201912 is an apocalyptic number.

It is an amenable number.

11920201912 is an abundant number, since it is smaller than the sum of its proper divisors (12180347288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11920201912 is a wasteful number, since it uses less digits than its factorization.

11920201912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912807 (or 1912803 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 28.

Subtracting 11920201912 from its reverse (21910202911), we obtain a palindrome (9990000999).

The spelling of 11920201912 in words is "eleven billion, nine hundred twenty million, two hundred one thousand, nine hundred twelve".