121011220147 has 2 divisors, whose sum is σ = 121011220148. Its totient is φ = 121011220146.

The previous prime is 121011220123. The next prime is 121011220151. The reversal of 121011220147 is 741022110121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121011220147 - 2⁷ = 121011220019 is a prime.

It is not a weakly prime, because it can be changed into another prime (121011020147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505610073 + 60505610074.

It is an arithmetic number, because the mean of its divisors is an integer number (60505610074).

Almost surely, 2^121011220147 is an apocalyptic number.

121011220147 is a deficient number, since it is larger than the sum of its proper divisors (1).

121011220147 is an equidigital number, since it uses as much as digits as its factorization.

121011220147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 121011220147 its reverse (741022110121), we get a palindrome (862033330268).

The spelling of 121011220147 in words is "one hundred twenty-one billion, eleven million, two hundred twenty thousand, one hundred forty-seven".