121100222501 has 2 divisors, whose sum is σ = 121100222502. Its totient is φ = 121100222500.

The previous prime is 121100222491. The next prime is 121100222531. The reversal of 121100222501 is 105222001121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68867405476 + 52232817025 = 262426^2 + 228545^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121100222501 is a prime.

It is a super-3 number, since 3×121100222501³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121100222501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121100222531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550111250 + 60550111251.

It is an arithmetic number, because the mean of its divisors is an integer number (60550111251).

Almost surely, 2^121100222501 is an apocalyptic number.

It is an amenable number.

121100222501 is a deficient number, since it is larger than the sum of its proper divisors (1).

121100222501 is an equidigital number, since it uses as much as digits as its factorization.

121100222501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 121100222501 its reverse (105222001121), we get a palindrome (226322223622).

The spelling of 121100222501 in words is "one hundred twenty-one billion, one hundred million, two hundred twenty-two thousand, five hundred one".