133031222121 has 48 divisors (see below), whose sum is σ = 205446312960. Its totient is φ = 75003602400.

The previous prime is 133031222099. The next prime is 133031222131. The reversal of 133031222121 is 121222130331.

It is not a de Polignac number, because 133031222121 - 2¹⁰ = 133031221097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (133031222131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84249510 + ... + 84251088.

It is an arithmetic number, because the mean of its divisors is an integer number (4280131520).

Almost surely, 2^133031222121 is an apocalyptic number.

It is an amenable number.

133031222121 is a deficient number, since it is larger than the sum of its proper divisors (72415090839).

133031222121 is a wasteful number, since it uses less digits than its factorization.

133031222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066 (or 1903 counting only the distinct ones).

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

Adding to 133031222121 its reverse (121222130331), we get a palindrome (254253352452).

The spelling of 133031222121 in words is "one hundred thirty-three billion, thirty-one million, two hundred twenty-two thousand, one hundred twenty-one".