133131100021 has 8 divisors (see below), whose sum is σ = 133449853824. Its totient is φ = 132812724000.

The previous prime is 133131099979. The next prime is 133131100093. The reversal of 133131100021 is 120001131331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133131100021 - 2¹¹ = 133131097973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133131099968 and 133131100004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133131170021) 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, 617601 + ... + 804793.

It is an arithmetic number, because the mean of its divisors is an integer number (16681231728).

Almost surely, 2^133131100021 is an apocalyptic number.

It is an amenable number.

133131100021 is a deficient number, since it is larger than the sum of its proper divisors (318753803).

133131100021 is an equidigital number, since it uses as much as digits as its factorization.

133131100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188891.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 133131100021 its reverse (120001131331), we get a palindrome (253132231352).

The spelling of 133131100021 in words is "one hundred thirty-three billion, one hundred thirty-one million, one hundred thousand, twenty-one".