11980298021 has 8 divisors (see below), whose sum is σ = 12735563904. Its totient is φ = 11230648000.

The previous prime is 11980298017. The next prime is 11980298051. The reversal of 11980298021 is 12089208911.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11980298021 - 2² = 11980298017 is a prime.

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 11980298021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11980298051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1399565 + ... + 1408098.

It is an arithmetic number, because the mean of its divisors is an integer number (1591945488).

Almost surely, 2^11980298021 is an apocalyptic number.

It is an amenable number.

11980298021 is a deficient number, since it is larger than the sum of its proper divisors (755265883).

11980298021 is a wasteful number, since it uses less digits than its factorization.

11980298021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2807931.

The product of its (nonzero) digits is 20736, while the sum is 41.

The spelling of 11980298021 in words is "eleven billion, nine hundred eighty million, two hundred ninety-eight thousand, twenty-one".