133111101220 has 24 divisors (see below), whose sum is σ = 279776222208. Its totient is φ = 53198172000.

The previous prime is 133111101203. The next prime is 133111101229. The reversal of 133111101220 is 22101111331.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 133111101194 and 133111101203.

It is not an unprimeable number, because it can be changed into a prime (133111101229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2868186 + ... + 2914225.

It is an arithmetic number, because the mean of its divisors is an integer number (11657342592).

Almost surely, 2^133111101220 is an apocalyptic number.

133111101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133111101220 is an abundant number, since it is smaller than the sum of its proper divisors (146665120988).

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

133111101220 is a wasteful number, since it uses less digits than its factorization.

133111101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5783571 (or 5783569 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 133111101220 its reverse (22101111331), we get a palindrome (155212212551).

The spelling of 133111101220 in words is "one hundred thirty-three billion, one hundred eleven million, one hundred one thousand, two hundred twenty".