2100404220434 has 16 divisors (see below), whose sum is σ = 3412573160472. Its totient is φ = 963813762048.

The previous prime is 2100404220433. The next prime is 2100404220487. The reversal of 2100404220434 is 4340224040012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1990145025625 + 110259194809 = 1410725^2 + 332053^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (2100404220433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233477519 + ... + 233486514.

Almost surely, 2^{2100404220434} is an apocalyptic number.

2100404220434 is a deficient number, since it is larger than the sum of its proper divisors (1312168940038).

2100404220434 is a wasteful number, since it uses less digits than its factorization.

2100404220434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466964221.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 2100404220434 its reverse (4340224040012), we get a palindrome (6440628260446).

The spelling of 2100404220434 in words is "two trillion, one hundred billion, four hundred four million, two hundred twenty thousand, four hundred thirty-four".