20340104212100 has 72 divisors (see below), whose sum is σ = 44424319161600. Its totient is φ = 8083436083200.

The previous prime is 20340104212079. The next prime is 20340104212111. The reversal of 20340104212100 is 121240104302.

It is a super-4 number, since 4×20340104212100⁴ (a number of 54 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8683556 + ... + 10774244.

It is an arithmetic number, because the mean of its divisors is an integer number (617004432800).

Almost surely, 2^{20340104212100} is an apocalyptic number.

20340104212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20340104212100 is an abundant number, since it is smaller than the sum of its proper divisors (24084214949500).

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

20340104212100 is a wasteful number, since it uses less digits than its factorization.

20340104212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091333 (or 2091326 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20340104212100 its reverse (121240104302), we get a palindrome (20461344316402).

The spelling of 20340104212100 in words is "twenty trillion, three hundred forty billion, one hundred four million, two hundred twelve thousand, one hundred".