11221211982 has 16 divisors (see below), whose sum is σ = 22726506240. Its totient is φ = 3693056952.

The previous prime is 11221211959. The next prime is 11221211983. The reversal of 11221211982 is 28911212211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221211983) 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, 11836248 + ... + 11837195.

It is an arithmetic number, because the mean of its divisors is an integer number (1420406640).

Almost surely, 2^11221211982 is an apocalyptic number.

11221211982 is an abundant number, since it is smaller than the sum of its proper divisors (11505294258).

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

11221211982 is a wasteful number, since it uses less digits than its factorization.

11221211982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23673527.

The product of its digits is 1152, while the sum is 30.

The spelling of 11221211982 in words is "eleven billion, two hundred twenty-one million, two hundred eleven thousand, nine hundred eighty-two".