1021421032313 has 16 divisors (see below), whose sum is σ = 1118206252800. Its totient is φ = 925295651280.

The previous prime is 1021421032273. The next prime is 1021421032409. The reversal of 1021421032313 is 3132301241201.

It is not a de Polignac number, because 1021421032313 - 2²⁰ = 1021419983737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021421037313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3944258 + ... + 4195236.

It is an arithmetic number, because the mean of its divisors is an integer number (69887890800).

Almost surely, 2^{1021421032313} is an apocalyptic number.

It is an amenable number.

1021421032313 is a deficient number, since it is larger than the sum of its proper divisors (96785220487).

1021421032313 is a wasteful number, since it uses less digits than its factorization.

1021421032313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252292.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1021421032313 its reverse (3132301241201), we get a palindrome (4153722273514).

The spelling of 1021421032313 in words is "one trillion, twenty-one billion, four hundred twenty-one million, thirty-two thousand, three hundred thirteen".