121121221982 has 16 divisors (see below), whose sum is σ = 184459303392. Its totient is φ = 59641284960.

The previous prime is 121121221951. The next prime is 121121221987. The reversal of 121121221982 is 289122121121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121221987) 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, 1586933 + ... + 1661504.

It is an arithmetic number, because the mean of its divisors is an integer number (11528706462).

Almost surely, 2^121121221982 is an apocalyptic number.

121121221982 is a deficient number, since it is larger than the sum of its proper divisors (63338081410).

121121221982 is a wasteful number, since it uses less digits than its factorization.

121121221982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248723.

The product of its digits is 2304, while the sum is 32.

The spelling of 121121221982 in words is "one hundred twenty-one billion, one hundred twenty-one million, two hundred twenty-one thousand, nine hundred eighty-two".