101221099927 has 2 divisors, whose sum is σ = 101221099928. Its totient is φ = 101221099926.

The previous prime is 101221099919. The next prime is 101221099937. The reversal of 101221099927 is 729990122101.

It is a weak prime.

It is an emirp because it is prime and its reverse (729990122101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101221099927 - 2³ = 101221099919 is a prime.

It is a super-2 number, since 2×101221099927² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101221099907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610549963 + 50610549964.

It is an arithmetic number, because the mean of its divisors is an integer number (50610549964).

Almost surely, 2^101221099927 is an apocalyptic number.

101221099927 is a deficient number, since it is larger than the sum of its proper divisors (1).

101221099927 is an equidigital number, since it uses as much as digits as its factorization.

101221099927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 43.

The spelling of 101221099927 in words is "one hundred one billion, two hundred twenty-one million, ninety-nine thousand, nine hundred twenty-seven".