129201222 has 16 divisors (see below), whose sum is σ = 258518592. Its totient is φ = 43047720.

The previous prime is 129201217. The next prime is 129201251. The reversal of 129201222 is 222102921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17697 + ... + 23907.

It is an arithmetic number, because the mean of its divisors is an integer number (16157412).

Almost surely, 2^129201222 is an apocalyptic number.

129201222 is an abundant number, since it is smaller than the sum of its proper divisors (129317370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129201222 is a wasteful number, since it uses less digits than its factorization.

129201222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9683.

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

The square root of 129201222 is about 11366.6715444760. The cubic root of 129201222 is about 505.5400190013.

The spelling of 129201222 in words is "one hundred twenty-nine million, two hundred one thousand, two hundred twenty-two".