122215573 has 2 divisors, whose sum is σ = 122215574.
Its totient is φ = 122215572.
The previous prime is 122215553. The next prime is 122215603. The reversal of 122215573 is 375512221.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 65318724 + 56896849 = 8082^2 + 7543^2
It is a cyclic number.
It is not a de Polignac number, because 122215573 - 29 = 122215061 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (122215523) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61107786 + 61107787.
It is an arithmetic number, because the mean of its divisors is an integer number (61107787).
Almost surely, 2122215573 is an apocalyptic number.
It is an amenable number.
122215573 is a deficient number, since it is larger than the sum of its proper divisors (1).
122215573 is an equidigital number, since it uses as much as digits as its factorization.
122215573 is an evil number, because the sum of its binary digits is even.
The product of its digits is 4200, while the sum is 28.
The square root of 122215573 is about 11055.1152413713.
The cubic root of 122215573 is about 496.2595180345.
Adding to 122215573 its reverse (375512221), we get a palindrome (497727794).
The spelling of 122215573 in words is "one hundred twenty-two million, two hundred fifteen thousand, five hundred seventy-three".