21020313331183 has 2 divisors, whose sum is σ = 21020313331184. Its totient is φ = 21020313331182.

The previous prime is 21020313331103. The next prime is 21020313331189. The reversal of 21020313331183 is 38113331302012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21020313331183 - 2²¹ = 21020311234031 is a prime.

It is a super-2 number, since 2×21020313331183² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21020313331189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10510156665591 + 10510156665592.

It is an arithmetic number, because the mean of its divisors is an integer number (10510156665592).

Almost surely, 2^{21020313331183} is an apocalyptic number.

21020313331183 is a deficient number, since it is larger than the sum of its proper divisors (1).

21020313331183 is an equidigital number, since it uses as much as digits as its factorization.

21020313331183 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

Adding to 21020313331183 its reverse (38113331302012), we get a palindrome (59133644633195).

The spelling of 21020313331183 in words is "twenty-one trillion, twenty billion, three hundred thirteen million, three hundred thirty-one thousand, one hundred eighty-three".