231021202213133 has 16 divisors (see below), whose sum is σ = 250025272680960. Its totient is φ = 212984491440000.

The previous prime is 231021202213121. The next prime is 231021202213171. The reversal of 231021202213133 is 331312202120132.

It is a cyclic number.

It is not a de Polignac number, because 231021202213133 - 2¹⁸ = 231021201950989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231021202263133) 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, 2066951993 + ... + 2067063758.

It is an arithmetic number, because the mean of its divisors is an integer number (15626579542560).

Almost surely, 2^{231021202213133} is an apocalyptic number.

It is an amenable number.

231021202213133 is a deficient number, since it is larger than the sum of its proper divisors (19004070467827).

231021202213133 is a wasteful number, since it uses less digits than its factorization.

231021202213133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4134015868.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 231021202213133 its reverse (331312202120132), we get a palindrome (562333404333265).

The spelling of 231021202213133 in words is "two hundred thirty-one trillion, twenty-one billion, two hundred two million, two hundred thirteen thousand, one hundred thirty-three".