121211228299 has 16 divisors (see below), whose sum is σ = 138864107520. Its totient is φ = 103642751520.

The previous prime is 121211228297. The next prime is 121211228309. The reversal of 121211228299 is 992822112121.

It is not a de Polignac number, because 121211228299 - 2¹ = 121211228297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121211228297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15490302 + ... + 15498124.

It is an arithmetic number, because the mean of its divisors is an integer number (8679006720).

Almost surely, 2^121211228299 is an apocalyptic number.

121211228299 is a deficient number, since it is larger than the sum of its proper divisors (17652879221).

121211228299 is an equidigital number, since it uses as much as digits as its factorization.

121211228299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12930.

The product of its digits is 20736, while the sum is 40.

The spelling of 121211228299 in words is "one hundred twenty-one billion, two hundred eleven million, two hundred twenty-eight thousand, two hundred ninety-nine".