21333010001031 has 12 divisors (see below), whose sum is σ = 30814826367000. Its totient is φ = 14221785780720.

The previous prime is 21333010000963. The next prime is 21333010001053. The reversal of 21333010001031 is 13010001033312.

It is a happy number.

It is not a de Polignac number, because 21333010001031 - 2¹¹ = 21333009998983 is a prime.

It is a super-2 number, since 2×21333010001031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21333010000995 and 21333010001013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333010001231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17794480 + ... + 18955461.

It is an arithmetic number, because the mean of its divisors is an integer number (2567902197250).

Almost surely, 2^{21333010001031} is an apocalyptic number.

21333010001031 is a deficient number, since it is larger than the sum of its proper divisors (9481816365969).

21333010001031 is a wasteful number, since it uses less digits than its factorization.

21333010001031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36814446 (or 36814443 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 21333010001031 its reverse (13010001033312), we get a palindrome (34343011034343).

The spelling of 21333010001031 in words is "twenty-one trillion, three hundred thirty-three billion, ten million, one thousand, thirty-one".