133133122221 has 16 divisors (see below), whose sum is σ = 193821595968. Its totient is φ = 80614483200.

The previous prime is 133133122211. The next prime is 133133122277. The reversal of 133133122221 is 122221331331.

It is a de Polignac number, because none of the positive numbers 2^k-133133122221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133133122191 and 133133122200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133133122201) 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, 1769020 + ... + 1842741.

It is an arithmetic number, because the mean of its divisors is an integer number (12113849748).

Almost surely, 2^133133122221 is an apocalyptic number.

133133122221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133133122221 is a deficient number, since it is larger than the sum of its proper divisors (60688473747).

133133122221 is a wasteful number, since it uses less digits than its factorization.

133133122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3612892.

The product of its digits is 1296, while the sum is 24.

Adding to 133133122221 its reverse (122221331331), we get a palindrome (255354453552).

The spelling of 133133122221 in words is "one hundred thirty-three billion, one hundred thirty-three million, one hundred twenty-two thousand, two hundred twenty-one".