1400221123021 has 12 divisors (see below), whose sum is σ = 1699922433568. Its totient is φ = 1129590148032.

The previous prime is 1400221123019. The next prime is 1400221123031. The reversal of 1400221123021 is 1203211220041.

It is not a de Polignac number, because 1400221123021 - 2¹ = 1400221123019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1400221123021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400221123031) 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 11 ways as a sum of consecutive naturals, for example, 346073391 + ... + 346077436.

Almost surely, 2^{1400221123021} is an apocalyptic number.

It is an amenable number.

1400221123021 is a deficient number, since it is larger than the sum of its proper divisors (299701310547).

1400221123021 is an equidigital number, since it uses as much as digits as its factorization.

1400221123021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692150868 (or 692150851 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1400221123021 its reverse (1203211220041), we get a palindrome (2603432343062).

The spelling of 1400221123021 in words is "one trillion, four hundred billion, two hundred twenty-one million, one hundred twenty-three thousand, twenty-one".