20101340121210 has 48 divisors (see below), whose sum is σ = 52265530179720. Its totient is φ = 5360147533440.

The previous prime is 20101340121199. The next prime is 20101340121211. The reversal of 20101340121210 is 1212104310102.

20101340121210 is a `hidden beast` number, since 2 + 0 + 101 + 340 + 1 + 212 + 10 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7494842504241 + 12606497616969 = 2737671^2 + 3550563^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20101340121211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2052805 + ... + 6664584.

Almost surely, 2^{20101340121210} is an apocalyptic number.

20101340121210 is an abundant number, since it is smaller than the sum of its proper divisors (32164190058510).

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

20101340121210 is a wasteful number, since it uses less digits than its factorization.

20101340121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8743023 (or 8743020 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 20101340121210 its reverse (1212104310102), we get a palindrome (21313444431312).

The spelling of 20101340121210 in words is "twenty trillion, one hundred one billion, three hundred forty million, one hundred twenty-one thousand, two hundred ten".