121101211201 has 2 divisors, whose sum is σ = 121101211202. Its totient is φ = 121101211200.

The previous prime is 121101211181. The next prime is 121101211207. The reversal of 121101211201 is 102112101121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119993652801 + 1107558400 = 346401^2 + 33280^2 .

It is an emirp because it is prime and its reverse (102112101121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121101211201 - 2¹⁵ = 121101178433 is a prime.

It is not a weakly prime, because it can be changed into another prime (121101211207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550605600 + 60550605601.

It is an arithmetic number, because the mean of its divisors is an integer number (60550605601).

Almost surely, 2^121101211201 is an apocalyptic number.

It is an amenable number.

121101211201 is a deficient number, since it is larger than the sum of its proper divisors (1).

121101211201 is an equidigital number, since it uses as much as digits as its factorization.

121101211201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121101211201 its reverse (102112101121), we get a palindrome (223213312322).

The spelling of 121101211201 in words is "one hundred twenty-one billion, one hundred one million, two hundred eleven thousand, two hundred one".