21033140410231 has 4 divisors (see below), whose sum is σ = 22270383963792. Its totient is φ = 19795896856672.

The previous prime is 21033140410213. The next prime is 21033140410237. The reversal of 21033140410231 is 13201404133012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21033140410231 - 2¹⁹ = 21033139885943 is a prime.

It is a super-2 number, since 2×21033140410231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21033140410196 and 21033140410205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033140410237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 618621776755 + ... + 618621776788.

It is an arithmetic number, because the mean of its divisors is an integer number (5567595990948).

Almost surely, 2^{21033140410231} is an apocalyptic number.

21033140410231 is a deficient number, since it is larger than the sum of its proper divisors (1237243553561).

21033140410231 is a wasteful number, since it uses less digits than its factorization.

21033140410231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237243553560.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21033140410231 its reverse (13201404133012), we get a palindrome (34234544543243).

The spelling of 21033140410231 in words is "twenty-one trillion, thirty-three billion, one hundred forty million, four hundred ten thousand, two hundred thirty-one".