121106807 has 4 divisors (see below), whose sum is σ = 121348080. Its totient is φ = 120865536.

The previous prime is 121106803. The next prime is 121106831. The reversal of 121106807 is 708601121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 708601121 = 1571 ⋅451051.

It is a cyclic number.

It is not a de Polignac number, because 121106807 - 2² = 121106803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121106803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119882 + ... + 120887.

It is an arithmetic number, because the mean of its divisors is an integer number (30337020).

Almost surely, 2^121106807 is an apocalyptic number.

121106807 is a deficient number, since it is larger than the sum of its proper divisors (241273).

121106807 is an equidigital number, since it uses as much as digits as its factorization.

121106807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241272.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 121106807 is about 11004.8537927589. The cubic root of 121106807 is about 494.7542323140.

Adding to 121106807 its reverse (708601121), we get a palindrome (829707928).

The spelling of 121106807 in words is "one hundred twenty-one million, one hundred six thousand, eight hundred seven".