121211112041 has 2 divisors, whose sum is σ = 121211112042. Its totient is φ = 121211112040.

The previous prime is 121211112013. The next prime is 121211112097. The reversal of 121211112041 is 140211112121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63313127641 + 57897984400 = 251621^2 + 240620^2 .

It is an emirp because it is prime and its reverse (140211112121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121211112041 - 2⁶ = 121211111977 is a prime.

It is not a weakly prime, because it can be changed into another prime (121211112241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605556020 + 60605556021.

It is an arithmetic number, because the mean of its divisors is an integer number (60605556021).

Almost surely, 2^121211112041 is an apocalyptic number.

It is an amenable number.

121211112041 is a deficient number, since it is larger than the sum of its proper divisors (1).

121211112041 is an equidigital number, since it uses as much as digits as its factorization.

121211112041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121211112041 its reverse (140211112121), we get a palindrome (261422224162).

The spelling of 121211112041 in words is "one hundred twenty-one billion, two hundred eleven million, one hundred twelve thousand, forty-one".