1402022021 has 2 divisors, whose sum is σ = 1402022022. Its totient is φ = 1402022020.

The previous prime is 1402021993. The next prime is 1402022047. The reversal of 1402022021 is 1202202041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1361241025 + 40780996 = 36895^2 + 6386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1402022021 - 2¹⁴ = 1402005637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1402021987 and 1402022005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1402022051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701011010 + 701011011.

It is an arithmetic number, because the mean of its divisors is an integer number (701011011).

Almost surely, 2^1402022021 is an apocalyptic number.

It is an amenable number.

1402022021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402022021 is an equidigital number, since it uses as much as digits as its factorization.

1402022021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1402022021 is about 37443.5845105674. The cubic root of 1402022021 is about 1119.2272574141.

Adding to 1402022021 its reverse (1202202041), we get a palindrome (2604224062).

The spelling of 1402022021 in words is "one billion, four hundred two million, twenty-two thousand, twenty-one".