1021421334101 has 6 divisors (see below), whose sum is σ = 1188184000950. Its totient is φ = 875504000616.

The previous prime is 1021421334071. The next prime is 1021421334103. The reversal of 1021421334101 is 1014331241201.

It can be written as a sum of positive squares in only one way, i.e., 990918711601 + 30502622500 = 995449^2 + 174650^2 .

It is not a de Polignac number, because 1021421334101 - 2²² = 1021417139797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021421334103) 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 5 ways as a sum of consecutive naturals, for example, 10422666626 + ... + 10422666723.

It is an arithmetic number, because the mean of its divisors is an integer number (198030666825).

Almost surely, 2^{1021421334101} is an apocalyptic number.

It is an amenable number.

1021421334101 is a deficient number, since it is larger than the sum of its proper divisors (166762666849).

1021421334101 is an equidigital number, since it uses as much as digits as its factorization.

1021421334101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20845333363 (or 20845333356 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 1021421334101 its reverse (1014331241201), we get a palindrome (2035752575302).

The spelling of 1021421334101 in words is "one trillion, twenty-one billion, four hundred twenty-one million, three hundred thirty-four thousand, one hundred one".