101221100027 has 2 divisors, whose sum is σ = 101221100028. Its totient is φ = 101221100026.

The previous prime is 101221099999. The next prime is 101221100041. The reversal of 101221100027 is 720001122101.

It is a strong prime.

It is an emirp because it is prime and its reverse (720001122101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101221100027 - 2¹⁰ = 101221099003 is a prime.

It is a super-2 number, since 2×101221100027² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101221099978 and 101221100014.

It is not a weakly prime, because it can be changed into another prime (101221100077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610550013 + 50610550014.

It is an arithmetic number, because the mean of its divisors is an integer number (50610550014).

Almost surely, 2^101221100027 is an apocalyptic number.

101221100027 is a deficient number, since it is larger than the sum of its proper divisors (1).

101221100027 is an equidigital number, since it uses as much as digits as its factorization.

101221100027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 17.

Adding to 101221100027 its reverse (720001122101), we get a palindrome (821222222128).

The spelling of 101221100027 in words is "one hundred one billion, two hundred twenty-one million, one hundred thousand, twenty-seven".