121122047 has 2 divisors, whose sum is σ = 121122048. Its totient is φ = 121122046.

The previous prime is 121122041. The next prime is 121122073. The reversal of 121122047 is 740221121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121122047 - 2¹⁸ = 120859903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121122041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561023 + 60561024.

It is an arithmetic number, because the mean of its divisors is an integer number (60561024).

Almost surely, 2^121122047 is an apocalyptic number.

121122047 is a deficient number, since it is larger than the sum of its proper divisors (1).

121122047 is an equidigital number, since it uses as much as digits as its factorization.

121122047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 121122047 is about 11005.5461927157. The cubic root of 121122047 is about 494.7749846247.

Adding to 121122047 its reverse (740221121), we get a palindrome (861343168).

The spelling of 121122047 in words is "one hundred twenty-one million, one hundred twenty-two thousand, forty-seven".