1121021101982 has 4 divisors (see below), whose sum is σ = 1681531652976. Its totient is φ = 560510550990.

The previous prime is 1121021101979. The next prime is 1121021101987. The reversal of 1121021101982 is 2891011201211.

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

It is a super-2 number, since 2×1121021101982² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121021101987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280255275494 + ... + 280255275497.

It is an arithmetic number, because the mean of its divisors is an integer number (420382913244).

Almost surely, 2^{1121021101982} is an apocalyptic number.

1121021101982 is a deficient number, since it is larger than the sum of its proper divisors (560510550994).

1121021101982 is an equidigital number, since it uses as much as digits as its factorization.

1121021101982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560510550993.

The product of its (nonzero) digits is 576, while the sum is 29.

The spelling of 1121021101982 in words is "one trillion, one hundred twenty-one billion, twenty-one million, one hundred one thousand, nine hundred eighty-two".