1213220310101 has 4 divisors (see below), whose sum is σ = 1215753129600. Its totient is φ = 1210687490604.

The previous prime is 1213220310079. The next prime is 1213220310109. The reversal of 1213220310101 is 1010130223121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1213220310101 - 2²⁶ = 1213153201237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1213220310101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213220310109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1266409031 + ... + 1266409988.

It is an arithmetic number, because the mean of its divisors is an integer number (303938282400).

Almost surely, 2^{1213220310101} is an apocalyptic number.

It is an amenable number.

1213220310101 is a deficient number, since it is larger than the sum of its proper divisors (2532819499).

1213220310101 is an equidigital number, since it uses as much as digits as its factorization.

1213220310101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2532819498.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1213220310101 its reverse (1010130223121), we get a palindrome (2223350533222).

The spelling of 1213220310101 in words is "one trillion, two hundred thirteen billion, two hundred twenty million, three hundred ten thousand, one hundred one".