133231032021 has 16 divisors (see below), whose sum is σ = 181582720704. Its totient is φ = 86860934784.

The previous prime is 133231032017. The next prime is 133231032097. The reversal of 133231032021 is 120230132331.

It is not a de Polignac number, because 133231032021 - 2² = 133231032017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133231032421) 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, 1315896 + ... + 1413521.

It is an arithmetic number, because the mean of its divisors is an integer number (11348920044).

Almost surely, 2^133231032021 is an apocalyptic number.

It is an amenable number.

133231032021 is a deficient number, since it is larger than the sum of its proper divisors (48351688683).

133231032021 is a wasteful number, since it uses less digits than its factorization.

133231032021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729780.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 133231032021 its reverse (120230132331), we get a palindrome (253461164352).

The spelling of 133231032021 in words is "one hundred thirty-three billion, two hundred thirty-one million, thirty-two thousand, twenty-one".