129351222883221 has 8 divisors (see below), whose sum is σ = 172468357287840. Its totient is φ = 86234118533712.

The previous prime is 129351222883193. The next prime is 129351222883243. The reversal of 129351222883221 is 122388222153921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129351222883221 - 2²³ = 129351214494613 is a prime.

It is a super-2 number, since 2×129351222883221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129351222883721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6001170 + ... + 17167308.

It is an arithmetic number, because the mean of its divisors is an integer number (21558544660980).

Almost surely, 2^{129351222883221} is an apocalyptic number.

It is an amenable number.

129351222883221 is a deficient number, since it is larger than the sum of its proper divisors (43117134404619).

129351222883221 is a wasteful number, since it uses less digits than its factorization.

129351222883221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15027555.

The product of its digits is 1658880, while the sum is 51.

The spelling of 129351222883221 in words is "one hundred twenty-nine trillion, three hundred fifty-one billion, two hundred twenty-two million, eight hundred eighty-three thousand, two hundred twenty-one".