121022002217 has 2 divisors, whose sum is σ = 121022002218. Its totient is φ = 121022002216.

The previous prime is 121022002207. The next prime is 121022002249. The reversal of 121022002217 is 712200220121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81234120256 + 39787881961 = 285016^2 + 199469^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121022002217 is a prime.

It is a super-2 number, since 2×121022002217² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121022002207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511001108 + 60511001109.

It is an arithmetic number, because the mean of its divisors is an integer number (60511001109).

Almost surely, 2^121022002217 is an apocalyptic number.

It is an amenable number.

121022002217 is a deficient number, since it is larger than the sum of its proper divisors (1).

121022002217 is an equidigital number, since it uses as much as digits as its factorization.

121022002217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 121022002217 its reverse (712200220121), we get a palindrome (833222222338).

The spelling of 121022002217 in words is "one hundred twenty-one billion, twenty-two million, two thousand, two hundred seventeen".