210123001002 has 16 divisors (see below), whose sum is σ = 426002797440. Its totient is φ = 69081534432.

The previous prime is 210123000961. The next prime is 210123001007. The reversal of 210123001002 is 200100321012.

It is not an unprimeable number, because it can be changed into a prime (210123001007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239866002 + ... + 239866877.

It is an arithmetic number, because the mean of its divisors is an integer number (26625174840).

Almost surely, 2^210123001002 is an apocalyptic number.

210123001002 is an abundant number, since it is smaller than the sum of its proper divisors (215879796438).

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

210123001002 is a wasteful number, since it uses less digits than its factorization.

210123001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479732957.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 210123001002 its reverse (200100321012), we get a palindrome (410223322014).

The spelling of 210123001002 in words is "two hundred ten billion, one hundred twenty-three million, one thousand, two".