123202012132 has 18 divisors (see below), whose sum is σ = 227548317318. Its totient is φ = 58358847168.

The previous prime is 123202012121. The next prime is 123202012133. The reversal of 123202012132 is 231210202321.

It can be written as a sum of positive squares in only one way, i.e., 105634100196 + 17567911936 = 325014^2 + 132544^2 .

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (123202012133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42658533 + ... + 42661420.

Almost surely, 2^123202012132 is an apocalyptic number.

It is an amenable number.

123202012132 is a deficient number, since it is larger than the sum of its proper divisors (104346305186).

123202012132 is a wasteful number, since it uses less digits than its factorization.

123202012132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85319995 (or 85319974 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 123202012132 its reverse (231210202321), we get a palindrome (354412214453).

The spelling of 123202012132 in words is "one hundred twenty-three billion, two hundred two million, twelve thousand, one hundred thirty-two".