1321131021202 has 8 divisors (see below), whose sum is σ = 1982034204300. Its totient is φ = 660452953104.

The previous prime is 1321131021151. The next prime is 1321131021257. The reversal of 1321131021202 is 2021201311231.

It can be written as a sum of positive squares in 2 ways, for example, as 1310404483441 + 10726537761 = 1144729^2 + 103569^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1321131021202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56264077 + ... + 56287552.

Almost surely, 2^{1321131021202} is an apocalyptic number.

1321131021202 is a deficient number, since it is larger than the sum of its proper divisors (660903183098).

1321131021202 is a wasteful number, since it uses less digits than its factorization.

1321131021202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112557500.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1321131021202 its reverse (2021201311231), we get a palindrome (3342332332433).

The spelling of 1321131021202 in words is "one trillion, three hundred twenty-one billion, one hundred thirty-one million, twenty-one thousand, two hundred two".