1020345213221 has 8 divisors (see below), whose sum is σ = 1045289662560. Its totient is φ = 995456013552.

The previous prime is 1020345213193. The next prime is 1020345213253. The reversal of 1020345213221 is 1223125430201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020345213221 - 2¹⁰ = 1020345212197 is a prime.

It is a super-2 number, since 2×1020345213221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020345213421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13775030 + ... + 13848903.

It is an arithmetic number, because the mean of its divisors is an integer number (130661207820).

Almost surely, 2^{1020345213221} is an apocalyptic number.

It is an amenable number.

1020345213221 is a deficient number, since it is larger than the sum of its proper divisors (24944449339).

1020345213221 is an equidigital number, since it uses as much as digits as its factorization.

1020345213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27624835.

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 1020345213221 in words is "one trillion, twenty billion, three hundred forty-five million, two hundred thirteen thousand, two hundred twenty-one".