133000011232221 has 64 divisors (see below), whose sum is σ = 208458266075136. Its totient is φ = 73843930713600.

The previous prime is 133000011232157. The next prime is 133000011232273. The reversal of 133000011232221 is 122232110000331.

It is not a de Polignac number, because 133000011232221 - 2⁶ = 133000011232157 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 (133000011212221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 207269340 + ... + 207910026.

It is an arithmetic number, because the mean of its divisors is an integer number (3257160407424).

Almost surely, 2^{133000011232221} is an apocalyptic number.

It is an amenable number.

133000011232221 is a deficient number, since it is larger than the sum of its proper divisors (75458254842915).

133000011232221 is a wasteful number, since it uses less digits than its factorization.

133000011232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641722.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 133000011232221 its reverse (122232110000331), we get a palindrome (255232121232552).

The spelling of 133000011232221 in words is "one hundred thirty-three trillion, eleven million, two hundred thirty-two thousand, two hundred twenty-one".