123020221996 has 48 divisors (see below), whose sum is σ = 246835975680. Its totient is φ = 52552684800.

The previous prime is 123020221991. The next prime is 123020221997. The reversal of 123020221996 is 699122020321.

It is not an unprimeable number, because it can be changed into a prime (123020221991) 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, 19342665 + ... + 19349023.

It is an arithmetic number, because the mean of its divisors is an integer number (5142416160).

Almost surely, 2^123020221996 is an apocalyptic number.

It is an amenable number.

123020221996 is an abundant number, since it is smaller than the sum of its proper divisors (123815753684).

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

123020221996 is a wasteful number, since it uses less digits than its factorization.

123020221996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8494 (or 8492 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 123020221996 in words is "one hundred twenty-three billion, twenty million, two hundred twenty-one thousand, nine hundred ninety-six".