2001232123002 has 72 divisors (see below), whose sum is σ = 5055571524276. Its totient is φ = 570459988224.

The previous prime is 2001232122997. The next prime is 2001232123021. The reversal of 2001232123002 is 2003212321002.

2001232123002 is a `hidden beast` number, since 200 + 1 + 232 + 1 + 230 + 0 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1908268722801 + 92963400201 = 1381401^2 + 304899^2 .

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 35 ways as a sum of consecutive naturals, for example, 2238153 + ... + 3001964.

Almost surely, 2^{2001232123002} is an apocalyptic number.

2001232123002 is an abundant number, since it is smaller than the sum of its proper divisors (3054339401274).

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

2001232123002 is a wasteful number, since it uses less digits than its factorization.

2001232123002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5240572 (or 5240562 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 2001232123002 its reverse (2003212321002), we get a palindrome (4004444444004).

The spelling of 2001232123002 in words is "two trillion, one billion, two hundred thirty-two million, one hundred twenty-three thousand, two".