123111101982 has 32 divisors (see below), whose sum is σ = 268688980224. Its totient is φ = 37294875200.

The previous prime is 123111101957. The next prime is 123111101989. The reversal of 123111101982 is 289101111321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123111101989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71394 + ... + 501317.

It is an arithmetic number, because the mean of its divisors is an integer number (8396530632).

Almost surely, 2^123111101982 is an apocalyptic number.

123111101982 is an abundant number, since it is smaller than the sum of its proper divisors (145577878242).

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

123111101982 is a wasteful number, since it uses less digits than its factorization.

123111101982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575984.

The product of its (nonzero) digits is 864, while the sum is 30.

The spelling of 123111101982 in words is "one hundred twenty-three billion, one hundred eleven million, one hundred one thousand, nine hundred eighty-two".