1213221130202 has 4 divisors (see below), whose sum is σ = 1819831695306. Its totient is φ = 606610565100.

The previous prime is 1213221130189. The next prime is 1213221130211. The reversal of 1213221130202 is 2020311223121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1082205364681 + 131015765521 = 1040291^2 + 361961^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303305282549 + ... + 303305282552.

Almost surely, 2^{1213221130202} is an apocalyptic number.

1213221130202 is a deficient number, since it is larger than the sum of its proper divisors (606610565104).

1213221130202 is an equidigital number, since it uses as much as digits as its factorization.

1213221130202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606610565103.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1213221130202 its reverse (2020311223121), we get a palindrome (3233532353323).

The spelling of 1213221130202 in words is "one trillion, two hundred thirteen billion, two hundred twenty-one million, one hundred thirty thousand, two hundred two".