122220212111117 has 2 divisors, whose sum is σ = 122220212111118. Its totient is φ = 122220212111116.

The previous prime is 122220212111083. The next prime is 122220212111143. The reversal of 122220212111117 is 711111212022221.

It is an a-pointer prime, because the next prime (122220212111143) can be obtained adding 122220212111117 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120351014552521 + 1869197558596 = 10970461^2 + 1367186^2 .

It is a cyclic number.

It is not a de Polignac number, because 122220212111117 - 2³⁴ = 122203032241933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122220212111197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110106055558 + 61110106055559.

It is an arithmetic number, because the mean of its divisors is an integer number (61110106055559).

Almost surely, 2^{122220212111117} is an apocalyptic number.

It is an amenable number.

122220212111117 is a deficient number, since it is larger than the sum of its proper divisors (1).

122220212111117 is an equidigital number, since it uses as much as digits as its factorization.

122220212111117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 26.

Adding to 122220212111117 its reverse (711111212022221), we get a palindrome (833331424133338).

The spelling of 122220212111117 in words is "one hundred twenty-two trillion, two hundred twenty billion, two hundred twelve million, one hundred eleven thousand, one hundred seventeen".