20012020121210 has 32 divisors (see below), whose sum is σ = 38924929103760. Its totient is φ = 7363834956288.

The previous prime is 20012020121183. The next prime is 20012020121231. The reversal of 20012020121210 is 1212102021002.

It can be written as a sum of positive squares in 8 ways, for example, as 3694080156001 + 16317939965209 = 1921999^2 + 4039547^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262655795 + ... + 262731974.

Almost surely, 2^{20012020121210} is an apocalyptic number.

20012020121210 is a deficient number, since it is larger than the sum of its proper divisors (18912908982550).

20012020121210 is a wasteful number, since it uses less digits than its factorization.

20012020121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525388082.

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

Adding to 20012020121210 its reverse (1212102021002), we get a palindrome (21224122142212).

The spelling of 20012020121210 in words is "twenty trillion, twelve billion, twenty million, one hundred twenty-one thousand, two hundred ten".