122011012200221 has 2 divisors, whose sum is σ = 122011012200222. Its totient is φ = 122011012200220.

The previous prime is 122011012200211. The next prime is 122011012200239. The reversal of 122011012200221 is 122002210110221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121636083765625 + 374928434596 = 11028875^2 + 612314^2 .

It is a cyclic number.

It is not a de Polignac number, because 122011012200221 - 2⁶ = 122011012200157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122011012200221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122011012200211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61005506100110 + 61005506100111.

It is an arithmetic number, because the mean of its divisors is an integer number (61005506100111).

Almost surely, 2^{122011012200221} is an apocalyptic number.

It is an amenable number.

122011012200221 is a deficient number, since it is larger than the sum of its proper divisors (1).

122011012200221 is an equidigital number, since it uses as much as digits as its factorization.

122011012200221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 122011012200221 its reverse (122002210110221), we get a palindrome (244013222310442).

The spelling of 122011012200221 in words is "one hundred twenty-two trillion, eleven billion, twelve million, two hundred thousand, two hundred twenty-one".