122122001 has 2 divisors, whose sum is σ = 122122002. Its totient is φ = 122122000.

The previous prime is 122121991. The next prime is 122122037. The reversal of 122122001 is 100221221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95082001 + 27040000 = 9751^2 + 5200^2 .

It is an emirp because it is prime and its reverse (100221221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122122001 - 2¹⁴ = 122105617 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122122081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61061000 + 61061001.

It is an arithmetic number, because the mean of its divisors is an integer number (61061001).

Almost surely, 2^122122001 is an apocalyptic number.

It is an amenable number.

122122001 is a deficient number, since it is larger than the sum of its proper divisors (1).

122122001 is an equidigital number, since it uses as much as digits as its factorization.

122122001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 122122001 is about 11050.8823629609. The cubic root of 122122001 is about 496.1328351836.

Adding to 122122001 its reverse (100221221), we get a palindrome (222343222).

The spelling of 122122001 in words is "one hundred twenty-two million, one hundred twenty-two thousand, one".