20121002012210 has 64 divisors (see below), whose sum is σ = 39768879878784. Its totient is φ = 7268973196800.

The previous prime is 20121002012191. The next prime is 20121002012231. The reversal of 20121002012210 is 1221020012102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12149774 + ... + 13706166.

It is an arithmetic number, because the mean of its divisors is an integer number (621388748106).

Almost surely, 2^{20121002012210} is an apocalyptic number.

20121002012210 is a deficient number, since it is larger than the sum of its proper divisors (19647877866574).

20121002012210 is a wasteful number, since it uses less digits than its factorization.

20121002012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557179.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20121002012210 its reverse (1221020012102), we get a palindrome (21342022024312).

The spelling of 20121002012210 in words is "twenty trillion, one hundred twenty-one billion, two million, twelve thousand, two hundred ten".