1402008821021 has 2 divisors, whose sum is σ = 1402008821022. Its totient is φ = 1402008821020.

The previous prime is 1402008820847. The next prime is 1402008821027. The reversal of 1402008821021 is 1201288002041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1224840225625 + 177168595396 = 1106725^2 + 420914^2 .

It is a cyclic number.

It is not a de Polignac number, because 1402008821021 - 2²² = 1402004626717 is a prime.

It is a super-2 number, since 2×1402008821021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1402008821027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701004410510 + 701004410511.

It is an arithmetic number, because the mean of its divisors is an integer number (701004410511).

Almost surely, 2^{1402008821021} is an apocalyptic number.

It is an amenable number.

1402008821021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402008821021 is an equidigital number, since it uses as much as digits as its factorization.

1402008821021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2048, while the sum is 29.

The spelling of 1402008821021 in words is "one trillion, four hundred two billion, eight million, eight hundred twenty-one thousand, twenty-one".