121072811 has 8 divisors (see below), whose sum is σ = 121872384. Its totient is φ = 120276520.

The previous prime is 121072801. The next prime is 121072823. The reversal of 121072811 is 118270121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121072811 - 2¹⁴ = 121056427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121072801) 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 7 ways as a sum of consecutive naturals, for example, 132446 + ... + 133356.

It is an arithmetic number, because the mean of its divisors is an integer number (15234048).

Almost surely, 2^121072811 is an apocalyptic number.

121072811 is a deficient number, since it is larger than the sum of its proper divisors (799573).

121072811 is an equidigital number, since it uses as much as digits as its factorization.

121072811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641.

The product of its (nonzero) digits is 224, while the sum is 23.

The square root of 121072811 is about 11003.3090931774. The cubic root of 121072811 is about 494.7079336807.

The spelling of 121072811 in words is "one hundred twenty-one million, seventy-two thousand, eight hundred eleven".