121001022217 has 2 divisors, whose sum is σ = 121001022218. Its totient is φ = 121001022216.

The previous prime is 121001022187. The next prime is 121001022257. The reversal of 121001022217 is 712220100121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120762505081 + 238517136 = 347509^2 + 15444^2 .

It is a cyclic number.

It is not a de Polignac number, because 121001022217 - 2⁷ = 121001022089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121001022194 and 121001022203.

It is not a weakly prime, because it can be changed into another prime (121001022257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500511108 + 60500511109.

It is an arithmetic number, because the mean of its divisors is an integer number (60500511109).

Almost surely, 2^121001022217 is an apocalyptic number.

It is an amenable number.

121001022217 is a deficient number, since it is larger than the sum of its proper divisors (1).

121001022217 is an equidigital number, since it uses as much as digits as its factorization.

121001022217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 121001022217 its reverse (712220100121), we get a palindrome (833221122338).

The spelling of 121001022217 in words is "one hundred twenty-one billion, one million, twenty-two thousand, two hundred seventeen".