1213321002 has 16 divisors (see below), whose sum is σ = 2448118080. Its totient is φ = 400860992.

The previous prime is 1213320967. The next prime is 1213321051. The reversal of 1213321002 is 2001233121.

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, 894102 + ... + 895457.

It is an arithmetic number, because the mean of its divisors is an integer number (153007380).

Almost surely, 2^1213321002 is an apocalyptic number.

1213321002 is an abundant number, since it is smaller than the sum of its proper divisors (1234797078).

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

1213321002 is a wasteful number, since it uses less digits than its factorization.

1213321002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1789677.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1213321002 is about 34832.7575997078. The cubic root of 1213321002 is about 1066.5762407502.

Adding to 1213321002 its reverse (2001233121), we get a palindrome (3214554123).

The spelling of 1213321002 in words is "one billion, two hundred thirteen million, three hundred twenty-one thousand, two".