20010122012002 has 16 divisors (see below), whose sum is σ = 32301778448952. Its totient is φ = 9262158693120.

The previous prime is 20010122011981. The next prime is 20010122012011. The reversal of 20010122012002 is 20021022101002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19464058652481 + 546063359521 = 4411809^2 + 738961^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4824038913 + ... + 4824043060.

Almost surely, 2^{20010122012002} is an apocalyptic number.

20010122012002 is a deficient number, since it is larger than the sum of its proper divisors (12291656436950).

20010122012002 is a wasteful number, since it uses less digits than its factorization.

20010122012002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9648082053.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20010122012002 its reverse (20021022101002), we get a palindrome (40031144113004).

The spelling of 20010122012002 in words is "twenty trillion, ten billion, one hundred twenty-two million, twelve thousand, two".