1222212211023 has 4 divisors (see below), whose sum is σ = 1629616281368. Its totient is φ = 814808140680.

The previous prime is 1222212210953. The next prime is 1222212211043. The reversal of 1222212211023 is 3201122122221.

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

It is not a de Polignac number, because 1222212211023 - 2¹⁸ = 1222211948879 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 (1222212211043) 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, 203702035168 + ... + 203702035173.

It is an arithmetic number, because the mean of its divisors is an integer number (407404070342).

Almost surely, 2^{1222212211023} is an apocalyptic number.

1222212211023 is a deficient number, since it is larger than the sum of its proper divisors (407404070345).

1222212211023 is an equidigital number, since it uses as much as digits as its factorization.

1222212211023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407404070344.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1222212211023 its reverse (3201122122221), we get a palindrome (4423334333244).

The spelling of 1222212211023 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, two hundred eleven thousand, twenty-three".