121226101 has 2 divisors, whose sum is σ = 121226102. Its totient is φ = 121226100.

The previous prime is 121226087. The next prime is 121226153. The reversal of 121226101 is 101622121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96236100 + 24990001 = 9810^2 + 4999^2 .

It is an emirp because it is prime and its reverse (101622121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121226101 - 2⁵ = 121226069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121226401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60613050 + 60613051.

It is an arithmetic number, because the mean of its divisors is an integer number (60613051).

Almost surely, 2^121226101 is an apocalyptic number.

It is an amenable number.

121226101 is a deficient number, since it is larger than the sum of its proper divisors (1).

121226101 is an equidigital number, since it uses as much as digits as its factorization.

121226101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 121226101 is about 11010.2725216045. The cubic root of 121226101 is about 494.9166284782.

Adding to 121226101 its reverse (101622121), we get a palindrome (222848222).

It can be divided in two parts, 121226 and 101, that multiplied together give a triangular number (12243826 = T₄₉₄₈).

The spelling of 121226101 in words is "one hundred twenty-one million, two hundred twenty-six thousand, one hundred one".