101221121141111 has 2 divisors, whose sum is σ = 101221121141112. Its totient is φ = 101221121141110.

The previous prime is 101221121141083. The next prime is 101221121141131. The reversal of 101221121141111 is 111141121122101.

It is an a-pointer prime, because the next prime (101221121141131) can be obtained adding 101221121141111 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101221121141111 - 2³⁰ = 101220047399287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101221121141131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610560570555 + 50610560570556.

It is an arithmetic number, because the mean of its divisors is an integer number (50610560570556).

Almost surely, 2^{101221121141111} is an apocalyptic number.

101221121141111 is a deficient number, since it is larger than the sum of its proper divisors (1).

101221121141111 is an equidigital number, since it uses as much as digits as its factorization.

101221121141111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 20.

Adding to 101221121141111 its reverse (111141121122101), we get a palindrome (212362242263212).

The spelling of 101221121141111 in words is "one hundred one trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred forty-one thousand, one hundred eleven".