133221692 has 12 divisors (see below), whose sum is σ = 245408520. Its totient is φ = 63104976.

The previous prime is 133221691. The next prime is 133221709. The reversal of 133221692 is 296122331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133221691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 876383 + ... + 876534.

It is an arithmetic number, because the mean of its divisors is an integer number (20450710).

Almost surely, 2^133221692 is an apocalyptic number.

It is an amenable number.

133221692 is a deficient number, since it is larger than the sum of its proper divisors (112186828).

133221692 is a wasteful number, since it uses less digits than its factorization.

133221692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752940 (or 1752938 counting only the distinct ones).

The product of its digits is 3888, while the sum is 29.

The square root of 133221692 is about 11542.1701598963. The cubic root of 133221692 is about 510.7303287696.

The spelling of 133221692 in words is "one hundred thirty-three million, two hundred twenty-one thousand, six hundred ninety-two".