221301231129 has 24 divisors (see below), whose sum is σ = 348735552672. Its totient is φ = 134114857920.

The previous prime is 221301231101. The next prime is 221301231163. The reversal of 221301231129 is 921132103122.

221301231129 is a `hidden beast` number, since 2 + 2 + 1 + 301 + 231 + 129 = 666.

It is not a de Polignac number, because 221301231129 - 2⁵ = 221301231097 is a prime.

It is a super-2 number, since 2×221301231129² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221301231629) 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, 2288334 + ... + 2383080.

It is an arithmetic number, because the mean of its divisors is an integer number (14530648028).

Almost surely, 2^221301231129 is an apocalyptic number.

It is an amenable number.

221301231129 is a deficient number, since it is larger than the sum of its proper divisors (127434321543).

221301231129 is a wasteful number, since it uses less digits than its factorization.

221301231129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118357 (or 118354 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 221301231129 in words is "two hundred twenty-one billion, three hundred one million, two hundred thirty-one thousand, one hundred twenty-nine".