122220121220101 has 2 divisors, whose sum is σ = 122220121220102. Its totient is φ = 122220121220100.

The previous prime is 122220121220053. The next prime is 122220121220147. The reversal of 122220121220101 is 101022121022221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108796873969476 + 13423247250625 = 10430574^2 + 3663775^2 .

It is a cyclic number.

It is not a de Polignac number, because 122220121220101 - 2⁹ = 122220121219589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122220121220161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110060610050 + 61110060610051.

It is an arithmetic number, because the mean of its divisors is an integer number (61110060610051).

Almost surely, 2^{122220121220101} is an apocalyptic number.

It is an amenable number.

122220121220101 is a deficient number, since it is larger than the sum of its proper divisors (1).

122220121220101 is an equidigital number, since it uses as much as digits as its factorization.

122220121220101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 122220121220101 its reverse (101022121022221), we get a palindrome (223242242242322).

The spelling of 122220121220101 in words is "one hundred twenty-two trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twenty thousand, one hundred one".