2400312621021 has 16 divisors (see below), whose sum is σ = 3661556419200. Its totient is φ = 1370130766848.

The previous prime is 2400312621019. The next prime is 2400312621131. The reversal of 2400312621021 is 1201262130042.

It is not a de Polignac number, because 2400312621021 - 2¹ = 2400312621019 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2400312620982 and 2400312621000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2400312621001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61498576 + ... + 61537593.

It is an arithmetic number, because the mean of its divisors is an integer number (228847276200).

Almost surely, 2^{2400312621021} is an apocalyptic number.

2400312621021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2400312621021 is a deficient number, since it is larger than the sum of its proper divisors (1261243798179).

2400312621021 is a wasteful number, since it uses less digits than its factorization.

2400312621021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123037108.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 2400312621021 its reverse (1201262130042), we get a palindrome (3601574751063).

The spelling of 2400312621021 in words is "two trillion, four hundred billion, three hundred twelve million, six hundred twenty-one thousand, twenty-one".