1021421032273 has 2 divisors, whose sum is σ = 1021421032274. Its totient is φ = 1021421032272.

The previous prime is 1021421032259. The next prime is 1021421032409. The reversal of 1021421032273 is 3722301241201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 949098763089 + 72322269184 = 974217^2 + 268928^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021421032273 - 2⁵ = 1021421032241 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021421035273) 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 as a sum of consecutive naturals, namely, 510710516136 + 510710516137.

It is an arithmetic number, because the mean of its divisors is an integer number (510710516137).

Almost surely, 2^{1021421032273} is an apocalyptic number.

It is an amenable number.

1021421032273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021421032273 is an equidigital number, since it uses as much as digits as its factorization.

1021421032273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 1021421032273 its reverse (3722301241201), we get a palindrome (4743722273474).

The spelling of 1021421032273 in words is "one trillion, twenty-one billion, four hundred twenty-one million, thirty-two thousand, two hundred seventy-three".