1222021113 has 32 divisors (see below), whose sum is σ = 1705557504. Its totient is φ = 777600000.

The previous prime is 1222021093. The next prime is 1222021121. The reversal of 1222021113 is 3111202221.

It is not a de Polignac number, because 1222021113 - 2⁹ = 1222020601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222021092 and 1222021101.

It is not an unprimeable number, because it can be changed into a prime (1222021133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2033013 + ... + 2033613.

It is an arithmetic number, because the mean of its divisors is an integer number (53298672).

Almost surely, 2^1222021113 is an apocalyptic number.

It is an amenable number.

1222021113 is a deficient number, since it is larger than the sum of its proper divisors (483536391).

1222021113 is a wasteful number, since it uses less digits than its factorization.

1222021113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1222021113 is about 34957.4185688818. The cubic root of 1222021113 is about 1069.1194645333.

Adding to 1222021113 its reverse (3111202221), we get a palindrome (4333223334).

It can be divided in two parts, 12220 and 21113, that added together give a palindrome (33333).

The spelling of 1222021113 in words is "one billion, two hundred twenty-two million, twenty-one thousand, one hundred thirteen".