121220011201 has 2 divisors, whose sum is σ = 121220011202. Its totient is φ = 121220011200.

The previous prime is 121220011169. The next prime is 121220011217. The reversal of 121220011201 is 102110022121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118601028225 + 2618982976 = 344385^2 + 51176^2 .

It is a cyclic number.

It is not a de Polignac number, because 121220011201 - 2⁵ = 121220011169 is a prime.

It is a super-2 number, since 2×121220011201² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121220011271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610005600 + 60610005601.

It is an arithmetic number, because the mean of its divisors is an integer number (60610005601).

Almost surely, 2^121220011201 is an apocalyptic number.

It is an amenable number.

121220011201 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220011201 is an equidigital number, since it uses as much as digits as its factorization.

121220011201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121220011201 its reverse (102110022121), we get a palindrome (223330033322).

The spelling of 121220011201 in words is "one hundred twenty-one billion, two hundred twenty million, eleven thousand, two hundred one".