121829211 has 16 divisors (see below), whose sum is σ = 206272000. Its totient is φ = 69616584.

The previous prime is 121829209. The next prime is 121829221. The reversal of 121829211 is 112928121.

It is not a de Polignac number, because 121829211 - 2¹ = 121829209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121829221) 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 15 ways as a sum of consecutive naturals, for example, 322111 + ... + 322488.

It is an arithmetic number, because the mean of its divisors is an integer number (12892000).

Almost surely, 2^121829211 is an apocalyptic number.

121829211 is a deficient number, since it is larger than the sum of its proper divisors (84442789).

121829211 is an equidigital number, since it uses as much as digits as its factorization.

121829211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644615 (or 644609 counting only the distinct ones).

The product of its digits is 576, while the sum is 27.

The square root of 121829211 is about 11037.6270547614. The cubic root of 121829211 is about 495.7360216785.

The spelling of 121829211 in words is "one hundred twenty-one million, eight hundred twenty-nine thousand, two hundred eleven".