11021112119978 has 4 divisors (see below), whose sum is σ = 16531668179970. Its totient is φ = 5510556059988.

The previous prime is 11021112119971. The next prime is 11021112119987. The reversal of 11021112119978 is 87991121112011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9967867639249 + 1053244480729 = 3157193^2 + 1026277^2 .

It is a super-2 number, since 2×11021112119978² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11021112119971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2755278029993 + ... + 2755278029996.

Almost surely, 2^{11021112119978} is an apocalyptic number.

11021112119978 is a deficient number, since it is larger than the sum of its proper divisors (5510556059992).

11021112119978 is an equidigital number, since it uses as much as digits as its factorization.

11021112119978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5510556059991.

The product of its (nonzero) digits is 18144, while the sum is 44.

The spelling of 11021112119978 in words is "eleven trillion, twenty-one billion, one hundred twelve million, one hundred nineteen thousand, nine hundred seventy-eight".