20012100001210 has 16 divisors (see below), whose sum is σ = 36024410919816. Its totient is φ = 8004255352128.

The previous prime is 20012100001193. The next prime is 20012100001217. The reversal of 20012100001210 is 1210000121002.

It can be written as a sum of positive squares in 4 ways, for example, as 19118834955081 + 893265046129 = 4372509^2 + 945127^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (20012100001217) 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, 72937269 + ... + 73211128.

Almost surely, 2^{20012100001210} is an apocalyptic number.

20012100001210 is a deficient number, since it is larger than the sum of its proper divisors (16012310918606).

20012100001210 is a wasteful number, since it uses less digits than its factorization.

20012100001210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146162097.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20012100001210 its reverse (1210000121002), we get a palindrome (21222100122212).

The spelling of 20012100001210 in words is "twenty trillion, twelve billion, one hundred million, one thousand, two hundred ten".