133031221123 has 16 divisors (see below), whose sum is σ = 145061280000. Its totient is φ = 121515986592.

The previous prime is 133031221097. The next prime is 133031221139. The reversal of 133031221123 is 321122130331.

It is a cyclic number.

It is not a de Polignac number, because 133031221123 - 2²⁹ = 132494350211 is a prime.

It is a super-2 number, since 2×133031221123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133031221094 and 133031221103.

It is not an unprimeable number, because it can be changed into a prime (133031221153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234528 + ... + 566626.

It is an arithmetic number, because the mean of its divisors is an integer number (9066330000).

Almost surely, 2^133031221123 is an apocalyptic number.

133031221123 is a deficient number, since it is larger than the sum of its proper divisors (12030058877).

133031221123 is a wasteful number, since it uses less digits than its factorization.

133031221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332874.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 133031221123 its reverse (321122130331), we get a palindrome (454153351454).

The spelling of 133031221123 in words is "one hundred thirty-three billion, thirty-one million, two hundred twenty-one thousand, one hundred twenty-three".