21211102111027 has 2 divisors, whose sum is σ = 21211102111028. Its totient is φ = 21211102111026.

The previous prime is 21211102110973. The next prime is 21211102111037. The reversal of 21211102111027 is 72011120111212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21211102111027 is a prime.

It is a super-3 number, since 3×21211102111027³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21211102110989 and 21211102111007.

It is not a weakly prime, because it can be changed into another prime (21211102111037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605551055513 + 10605551055514.

It is an arithmetic number, because the mean of its divisors is an integer number (10605551055514).

Almost surely, 2^{21211102111027} is an apocalyptic number.

21211102111027 is a deficient number, since it is larger than the sum of its proper divisors (1).

21211102111027 is an equidigital number, since it uses as much as digits as its factorization.

21211102111027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 22.

Adding to 21211102111027 its reverse (72011120111212), we get a palindrome (93222222222239).

The spelling of 21211102111027 in words is "twenty-one trillion, two hundred eleven billion, one hundred two million, one hundred eleven thousand, twenty-seven".