121226745 has 64 divisors (see below), whose sum is σ = 218972160. Its totient is φ = 56908800.

The previous prime is 121226731. The next prime is 121226747. The reversal of 121226745 is 547622121.

It is not a de Polignac number, because 121226745 - 2⁵ = 121226713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121226747) 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 in 63 ways as a sum of consecutive naturals, for example, 634600 + ... + 634790.

It is an arithmetic number, because the mean of its divisors is an integer number (3421440).

Almost surely, 2^121226745 is an apocalyptic number.

121226745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121226745 is a deficient number, since it is larger than the sum of its proper divisors (97745415).

121226745 is a wasteful number, since it uses less digits than its factorization.

121226745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366.

The product of its digits is 6720, while the sum is 30.

The square root of 121226745 is about 11010.3017669817. The cubic root of 121226745 is about 494.9175048729.

Adding to 121226745 its reverse (547622121), we get a palindrome (668848866).

The spelling of 121226745 in words is "one hundred twenty-one million, two hundred twenty-six thousand, seven hundred forty-five".