1222212444401 has 4 divisors (see below), whose sum is σ = 1316228786292. Its totient is φ = 1128196102512.

The previous prime is 1222212444359. The next prime is 1222212444413. The reversal of 1222212444401 is 1044442122221.

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 411681357376 + 810531087025 = 641624^2 + 900295^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222212444401 - 2²² = 1222208250097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222212444491) 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, 47008170926 + ... + 47008170951.

It is an arithmetic number, because the mean of its divisors is an integer number (329057196573).

Almost surely, 2^{1222212444401} is an apocalyptic number.

It is an amenable number.

1222212444401 is a deficient number, since it is larger than the sum of its proper divisors (94016341891).

1222212444401 is an equidigital number, since it uses as much as digits as its factorization.

1222212444401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94016341890.

The product of its (nonzero) digits is 8192, while the sum is 29.

Adding to 1222212444401 its reverse (1044442122221), we get a palindrome (2266654566622).

The spelling of 1222212444401 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, four hundred forty-four thousand, four hundred one".