11228492001921 has 12 divisors (see below), whose sum is σ = 15800758829712. Its totient is φ = 7091679158424.

The previous prime is 11228492001917. The next prime is 11228492001943. The reversal of 11228492001921 is 12910029482211.

It is a happy number.

It is not a de Polignac number, because 11228492001921 - 2² = 11228492001917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11228492001971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5183974911 + ... + 5183977076.

It is an arithmetic number, because the mean of its divisors is an integer number (1316729902476).

Almost surely, 2^{11228492001921} is an apocalyptic number.

It is an amenable number.

11228492001921 is a deficient number, since it is larger than the sum of its proper divisors (4572266827791).

11228492001921 is a wasteful number, since it uses less digits than its factorization.

11228492001921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10367952028 (or 10367952009 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 42.

The spelling of 11228492001921 in words is "eleven trillion, two hundred twenty-eight billion, four hundred ninety-two million, one thousand, nine hundred twenty-one".