21122321333031 has 12 divisors (see below), whose sum is σ = 30510131806440. Its totient is φ = 14081495815440.

The previous prime is 21122321332963. The next prime is 21122321333063. The reversal of 21122321333031 is 13033312322112.

21122321333031 is a `hidden beast` number, since 2 + 1 + 1 + 2 + 2 + 321 + 3 + 330 + 3 + 1 = 666.

It is not a de Polignac number, because 21122321333031 - 2¹⁴ = 21122321316647 is a prime.

It is a super-2 number, since 2×21122321333031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21122321332986 and 21122321333004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122321338031) 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, 1638940 + ... + 6703041.

It is an arithmetic number, because the mean of its divisors is an integer number (2542510983870).

Almost surely, 2^{21122321333031} is an apocalyptic number.

21122321333031 is a deficient number, since it is larger than the sum of its proper divisors (9387810473409).

21122321333031 is a wasteful number, since it uses less digits than its factorization.

21122321333031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8623326 (or 8623323 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 21122321333031 its reverse (13033312322112), we get a palindrome (34155633655143).

The spelling of 21122321333031 in words is "twenty-one trillion, one hundred twenty-two billion, three hundred twenty-one million, three hundred thirty-three thousand, thirty-one".