1222211023 has 4 divisors (see below), whose sum is σ = 1333321128. Its totient is φ = 1111100920.

The previous prime is 1222211017. The next prime is 1222211057. The reversal of 1222211023 is 3201122221.

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 1222211023 - 2¹³ = 1222202831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222210988 and 1222211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222211093) 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, 55555036 + ... + 55555057.

It is an arithmetic number, because the mean of its divisors is an integer number (333330282).

Almost surely, 2^1222211023 is an apocalyptic number.

1222211023 is a deficient number, since it is larger than the sum of its proper divisors (111110105).

1222211023 is a wasteful number, since it uses less digits than its factorization.

1222211023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111110104.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1222211023 is about 34960.1347680469. The cubic root of 1222211023 is about 1069.1748443623.

Adding to 1222211023 its reverse (3201122221), we get a palindrome (4423333244).

The spelling of 1222211023 in words is "one billion, two hundred twenty-two million, two hundred eleven thousand, twenty-three".