121020012221347 has 2 divisors, whose sum is σ = 121020012221348. Its totient is φ = 121020012221346.

The previous prime is 121020012221293. The next prime is 121020012221467. The reversal of 121020012221347 is 743122210020121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121020012221347 is a prime.

It is not a weakly prime, because it can be changed into another prime (121020012221047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510006110673 + 60510006110674.

It is an arithmetic number, because the mean of its divisors is an integer number (60510006110674).

Almost surely, 2^{121020012221347} is an apocalyptic number.

121020012221347 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020012221347 is an equidigital number, since it uses as much as digits as its factorization.

121020012221347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

Adding to 121020012221347 its reverse (743122210020121), we get a palindrome (864142222241468).

The spelling of 121020012221347 in words is "one hundred twenty-one trillion, twenty billion, twelve million, two hundred twenty-one thousand, three hundred forty-seven".