1222100229 has 24 divisors (see below), whose sum is σ = 1908090048. Its totient is φ = 693705600.

The previous prime is 1222100221. The next prime is 1222100237. The reversal of 1222100229 is 9220012221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1222100221) and next prime (1222100237).

It is not a de Polignac number, because 1222100229 - 2³ = 1222100221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222100221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5332 + ... + 49725.

It is an arithmetic number, because the mean of its divisors is an integer number (79503752).

Almost surely, 2^1222100229 is an apocalyptic number.

It is an amenable number.

1222100229 is a deficient number, since it is larger than the sum of its proper divisors (685989819).

1222100229 is a wasteful number, since it uses less digits than its factorization.

1222100229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55225 (or 55218 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1222100229 is about 34958.5501558632. The cubic root of 1222100229 is about 1069.1425363197.

The spelling of 1222100229 in words is "one billion, two hundred twenty-two million, one hundred thousand, two hundred twenty-nine".