1321020010202 has 16 divisors (see below), whose sum is σ = 2087712178560. Its totient is φ = 625178987712.

The previous prime is 1321020010133. The next prime is 1321020010213. The reversal of 1321020010202 is 2020100201231.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15716783 + ... + 15800610.

It is an arithmetic number, because the mean of its divisors is an integer number (130482011160).

Almost surely, 2^{1321020010202} is an apocalyptic number.

1321020010202 is a deficient number, since it is larger than the sum of its proper divisors (766692168358).

1321020010202 is a wasteful number, since it uses less digits than its factorization.

1321020010202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31518517.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1321020010202 its reverse (2020100201231), we get a palindrome (3341120211433).

The spelling of 1321020010202 in words is "one trillion, three hundred twenty-one billion, twenty million, ten thousand, two hundred two".