101221001210111 has 2 divisors, whose sum is σ = 101221001210112. Its totient is φ = 101221001210110.

The previous prime is 101221001210071. The next prime is 101221001210143. The reversal of 101221001210111 is 111012100122101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101221001210111 - 2²² = 101220997015807 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101221001210191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610500605055 + 50610500605056.

It is an arithmetic number, because the mean of its divisors is an integer number (50610500605056).

Almost surely, 2^{101221001210111} is an apocalyptic number.

101221001210111 is a deficient number, since it is larger than the sum of its proper divisors (1).

101221001210111 is an equidigital number, since it uses as much as digits as its factorization.

101221001210111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 101221001210111 its reverse (111012100122101), we get a palindrome (212233101332212).

The spelling of 101221001210111 in words is "one hundred one trillion, two hundred twenty-one billion, one million, two hundred ten thousand, one hundred eleven".