1222351220135 has 4 divisors (see below), whose sum is σ = 1466821464168. Its totient is φ = 977880976104.

The previous prime is 1222351220071. The next prime is 1222351220171. The reversal of 1222351220135 is 5310221532221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1222351220135 - 2⁶ = 1222351220071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222351220098 and 1222351220107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122235122009 + ... + 122235122018.

It is an arithmetic number, because the mean of its divisors is an integer number (366705366042).

Almost surely, 2^{1222351220135} is an apocalyptic number.

1222351220135 is a deficient number, since it is larger than the sum of its proper divisors (244470244033).

1222351220135 is an equidigital number, since it uses as much as digits as its factorization.

1222351220135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244470244032.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 1222351220135 its reverse (5310221532221), we get a palindrome (6532572752356).

The spelling of 1222351220135 in words is "one trillion, two hundred twenty-two billion, three hundred fifty-one million, two hundred twenty thousand, one hundred thirty-five".