1402021123021 has 4 divisors (see below), whose sum is σ = 1402027121344. Its totient is φ = 1402015124700.

The previous prime is 1402021122977. The next prime is 1402021123049. The reversal of 1402021123021 is 1203211202041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1402021123021 - 2⁷ = 1402021122893 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 1402021123021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402021120021) 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 in 3 ways as a sum of consecutive naturals, for example, 2633715 + ... + 3120976.

It is an arithmetic number, because the mean of its divisors is an integer number (350506780336).

Almost surely, 2^{1402021123021} is an apocalyptic number.

It is an amenable number.

1402021123021 is a deficient number, since it is larger than the sum of its proper divisors (5998323).

1402021123021 is an equidigital number, since it uses as much as digits as its factorization.

1402021123021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5998322.

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

Adding to 1402021123021 its reverse (1203211202041), we get a palindrome (2605232325062).

The spelling of 1402021123021 in words is "one trillion, four hundred two billion, twenty-one million, one hundred twenty-three thousand, twenty-one".