123311212002 has 80 divisors (see below), whose sum is σ = 319158509472. Its totient is φ = 35168964480.

The previous prime is 123311211977. The next prime is 123311212027. The reversal of 123311212002 is 200212113321.

123311212002 is a `hidden beast` number, since 12 + 331 + 121 + 200 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (123311211977) and next prime (123311212027).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2004948 + ... + 2065535.

Almost surely, 2^123311212002 is an apocalyptic number.

123311212002 is an abundant number, since it is smaller than the sum of its proper divisors (195847297470).

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

123311212002 is a wasteful number, since it uses less digits than its factorization.

123311212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070525 (or 4070516 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 123311212002 its reverse (200212113321), we get a palindrome (323523325323).

The spelling of 123311212002 in words is "one hundred twenty-three billion, three hundred eleven million, two hundred twelve thousand, two".