1222401111 has 16 divisors (see below), whose sum is σ = 1641868800. Its totient is φ = 808956288.

The previous prime is 1222401097. The next prime is 1222401137. The reversal of 1222401111 is 1111042221.

It is not a de Polignac number, because 1222401111 - 2⁷ = 1222400983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222401151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239100 + ... + 244158.

It is an arithmetic number, because the mean of its divisors is an integer number (102616800).

Almost surely, 2^1222401111 is an apocalyptic number.

1222401111 is a deficient number, since it is larger than the sum of its proper divisors (419467689).

1222401111 is a wasteful number, since it uses less digits than its factorization.

1222401111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5638.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1222401111 is about 34962.8533017544. The cubic root of 1222401111 is about 1069.2302703535.

Adding to 1222401111 its reverse (1111042221), we get a palindrome (2333443332).

The spelling of 1222401111 in words is "one billion, two hundred twenty-two million, four hundred one thousand, one hundred eleven".