11421098979 has 32 divisors (see below), whose sum is σ = 15909696000. Its totient is φ = 7282168320.

The previous prime is 11421098959. The next prime is 11421098981. The reversal of 11421098979 is 97989012411.

It is a happy number.

It is not a de Polignac number, because 11421098979 - 2⁵ = 11421098947 is a prime.

It is a super-2 number, since 2×11421098979² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11421098959) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1360507 + ... + 1368875.

It is an arithmetic number, because the mean of its divisors is an integer number (497178000).

Almost surely, 2^11421098979 is an apocalyptic number.

11421098979 is a deficient number, since it is larger than the sum of its proper divisors (4488597021).

11421098979 is a wasteful number, since it uses less digits than its factorization.

11421098979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8635.

The product of its (nonzero) digits is 326592, while the sum is 51.

The spelling of 11421098979 in words is "eleven billion, four hundred twenty-one million, ninety-eight thousand, nine hundred seventy-nine".