10400002222021 has 4 divisors (see below), whose sum is σ = 10653660812844. Its totient is φ = 10146343631200.

The previous prime is 10400002222003. The next prime is 10400002222061. The reversal of 10400002222021 is 12022220000401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 652581230625 + 9747420991396 = 807825^2 + 3122086^2 .

It is a cyclic number.

It is not a de Polignac number, because 10400002222021 - 2²⁵ = 10399968667589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10400002221986 and 10400002222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10400002222061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126829295350 + ... + 126829295431.

It is an arithmetic number, because the mean of its divisors is an integer number (2663415203211).

Almost surely, 2^{10400002222021} is an apocalyptic number.

It is an amenable number.

10400002222021 is a deficient number, since it is larger than the sum of its proper divisors (253658590823).

10400002222021 is an equidigital number, since it uses as much as digits as its factorization.

10400002222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253658590822.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 10400002222021 its reverse (12022220000401), we get a palindrome (22422222222422).

The spelling of 10400002222021 in words is "ten trillion, four hundred billion, two million, two hundred twenty-two thousand, twenty-one".