21013101033231 has 8 divisors (see below), whose sum is σ = 28019333821104. Its totient is φ = 14007801133760.

The previous prime is 21013101033193. The next prime is 21013101033241. The reversal of 21013101033231 is 13233010131012.

It is a happy number.

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 21013101033231 - 2⁹ = 21013101032719 is a prime.

It is a super-2 number, since 2×21013101033231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21013101033198 and 21013101033207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21013101033241) 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, 233169540 + ... + 233259641.

It is an arithmetic number, because the mean of its divisors is an integer number (3502416727638).

Almost surely, 2^{21013101033231} is an apocalyptic number.

21013101033231 is a deficient number, since it is larger than the sum of its proper divisors (7006232787873).

21013101033231 is a wasteful number, since it uses less digits than its factorization.

21013101033231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466444201.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 21013101033231 its reverse (13233010131012), we get a palindrome (34246111164243).

The spelling of 21013101033231 in words is "twenty-one trillion, thirteen billion, one hundred one million, thirty-three thousand, two hundred thirty-one".