1321022003202 has 48 divisors (see below), whose sum is σ = 3125272894848. Its totient is φ = 399943383840.

The previous prime is 1321022003179. The next prime is 1321022003243. The reversal of 1321022003202 is 2023002201231.

1321022003202 is a `hidden beast` number, since 1 + 321 + 0 + 2 + 20 + 0 + 320 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2835658 + ... + 3268485.

It is an arithmetic number, because the mean of its divisors is an integer number (65109851976).

Almost surely, 2^{1321022003202} is an apocalyptic number.

1321022003202 is an abundant number, since it is smaller than the sum of its proper divisors (1804250891646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321022003202 is a wasteful number, since it uses less digits than its factorization.

1321022003202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105255 (or 6105252 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 1321022003202 its reverse (2023002201231), we get a palindrome (3344024204433).

The spelling of 1321022003202 in words is "one trillion, three hundred twenty-one billion, twenty-two million, three thousand, two hundred two".