1220122123213 has 4 divisors (see below), whose sum is σ = 1394425283680. Its totient is φ = 1045818962748.

The previous prime is 1220122123153. The next prime is 1220122123243. The reversal of 1220122123213 is 3123212210221.

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 not a de Polignac number, because 1220122123213 - 2⁹ = 1220122122701 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 (1220122123243) 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, 87151580223 + ... + 87151580236.

It is an arithmetic number, because the mean of its divisors is an integer number (348606320920).

Almost surely, 2^{1220122123213} is an apocalyptic number.

It is an amenable number.

1220122123213 is a deficient number, since it is larger than the sum of its proper divisors (174303160467).

1220122123213 is an equidigital number, since it uses as much as digits as its factorization.

1220122123213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174303160466.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1220122123213 its reverse (3123212210221), we get a palindrome (4343334333434).

The spelling of 1220122123213 in words is "one trillion, two hundred twenty billion, one hundred twenty-two million, one hundred twenty-three thousand, two hundred thirteen".