23311421133021 has 36 divisors (see below), whose sum is σ = 39171646266012. Its totient is φ = 13320092628864.

The previous prime is 23311421133019. The next prime is 23311421133103. The reversal of 23311421133021 is 12033112411332.

23311421133021 is a `hidden beast` number, since 2 + 3 + 3 + 114 + 211 + 330 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7514254193796 + 15797166939225 = 2741214^2 + 3974565^2 .

It is not a de Polignac number, because 23311421133021 - 2¹ = 23311421133019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23311421135021) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6800761 + ... + 9637073.

It is an arithmetic number, because the mean of its divisors is an integer number (1088101285167).

Almost surely, 2^{23311421133021} is an apocalyptic number.

23311421133021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23311421133021 is a deficient number, since it is larger than the sum of its proper divisors (15860225132991).

23311421133021 is a wasteful number, since it uses less digits than its factorization.

23311421133021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854970 (or 2854960 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 23311421133021 its reverse (12033112411332), we get a palindrome (35344533544353).

The spelling of 23311421133021 in words is "twenty-three trillion, three hundred eleven billion, four hundred twenty-one million, one hundred thirty-three thousand, twenty-one".