101221112011 has 2 divisors, whose sum is σ = 101221112012. Its totient is φ = 101221112010.

The previous prime is 101221111987. The next prime is 101221112023. The reversal of 101221112011 is 110211122101.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (110211122101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 101221112011 - 2³¹ = 99073628363 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101221111982 and 101221112000.

It is not a weakly prime, because it can be changed into another prime (101221112081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610556005 + 50610556006.

It is an arithmetic number, because the mean of its divisors is an integer number (50610556006).

Almost surely, 2^101221112011 is an apocalyptic number.

101221112011 is a deficient number, since it is larger than the sum of its proper divisors (1).

101221112011 is an equidigital number, since it uses as much as digits as its factorization.

101221112011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 101221112011 its reverse (110211122101), we get a palindrome (211432234112).

The spelling of 101221112011 in words is "one hundred one billion, two hundred twenty-one million, one hundred twelve thousand, eleven".