121220201147 has 2 divisors, whose sum is σ = 121220201148. Its totient is φ = 121220201146.

The previous prime is 121220201119. The next prime is 121220201189. The reversal of 121220201147 is 741102022121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121220201147 - 2²⁴ = 121203423931 is a prime.

It is a super-2 number, since 2×121220201147² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121220201107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610100573 + 60610100574.

It is an arithmetic number, because the mean of its divisors is an integer number (60610100574).

Almost surely, 2^121220201147 is an apocalyptic number.

121220201147 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220201147 is an equidigital number, since it uses as much as digits as its factorization.

121220201147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 121220201147 its reverse (741102022121), we get a palindrome (862322223268).

The spelling of 121220201147 in words is "one hundred twenty-one billion, two hundred twenty million, two hundred one thousand, one hundred forty-seven".