1020421310213 has 4 divisors (see below), whose sum is σ = 1029957958080. Its totient is φ = 1010884662348.

The previous prime is 1020421310197. The next prime is 1020421310243. The reversal of 1020421310213 is 3120131240201.

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 1020421310213 - 2⁴ = 1020421310197 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 (1020421310243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4768323773 + ... + 4768323986.

It is an arithmetic number, because the mean of its divisors is an integer number (257489489520).

Almost surely, 2^{1020421310213} is an apocalyptic number.

It is an amenable number.

1020421310213 is a deficient number, since it is larger than the sum of its proper divisors (9536647867).

1020421310213 is an equidigital number, since it uses as much as digits as its factorization.

1020421310213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9536647866.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1020421310213 its reverse (3120131240201), we get a palindrome (4140552550414).

The spelling of 1020421310213 in words is "one trillion, twenty billion, four hundred twenty-one million, three hundred ten thousand, two hundred thirteen".