133222100 has 72 divisors (see below), whose sum is σ = 317229696. Its totient is φ = 48160000.

The previous prime is 133222099. The next prime is 133222121. The reversal of 133222100 is 1222331.

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 23 ways as a sum of consecutive naturals, for example, 308885 + ... + 309315.

It is an arithmetic number, because the mean of its divisors is an integer number (4405968).

Almost surely, 2^133222100 is an apocalyptic number.

133222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133222100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158614848).

133222100 is an abundant number, since it is smaller than the sum of its proper divisors (184007596).

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

133222100 is a wasteful number, since it uses less digits than its factorization.

133222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 133222100 is about 11542.1878342020. The cubic root of 133222100 is about 510.7308501505.

Adding to 133222100 its reverse (1222331), we get a palindrome (134444431).

It can be divided in two parts, 1332 and 22100, that added together give a palindrome (23432).

The spelling of 133222100 in words is "one hundred thirty-three million, two hundred twenty-two thousand, one hundred".