1220101222213 has 4 divisors (see below), whose sum is σ = 1220103571500. Its totient is φ = 1220098872928.

The previous prime is 1220101222187. The next prime is 1220101222217. The reversal of 1220101222213 is 3122221010221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 339135016609 + 880966205604 = 582353^2 + 938598^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220101222213 - 2¹⁷ = 1220101091141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220101222217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12088 + ... + 1562161.

It is an arithmetic number, because the mean of its divisors is an integer number (305025892875).

Almost surely, 2^{1220101222213} is an apocalyptic number.

It is an amenable number.

1220101222213 is a deficient number, since it is larger than the sum of its proper divisors (2349287).

1220101222213 is an equidigital number, since it uses as much as digits as its factorization.

1220101222213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2349286.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1220101222213 its reverse (3122221010221), we get a palindrome (4342322232434).

The spelling of 1220101222213 in words is "one trillion, two hundred twenty billion, one hundred one million, two hundred twenty-two thousand, two hundred thirteen".