21002130112027 has 2 divisors, whose sum is σ = 21002130112028. Its totient is φ = 21002130112026.

The previous prime is 21002130112013. The next prime is 21002130112043. The reversal of 21002130112027 is 72021103120012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21002130112027 is a prime.

It is a super-2 number, since 2×21002130112027² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21002130111989 and 21002130112007.

It is not a weakly prime, because it can be changed into another prime (21002130112057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10501065056013 + 10501065056014.

It is an arithmetic number, because the mean of its divisors is an integer number (10501065056014).

Almost surely, 2^{21002130112027} is an apocalyptic number.

21002130112027 is a deficient number, since it is larger than the sum of its proper divisors (1).

21002130112027 is an equidigital number, since it uses as much as digits as its factorization.

21002130112027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 21002130112027 its reverse (72021103120012), we get a palindrome (93023233232039).

The spelling of 21002130112027 in words is "twenty-one trillion, two billion, one hundred thirty million, one hundred twelve thousand, twenty-seven".