1211230099 has 8 divisors (see below), whose sum is σ = 1218868560. Its totient is φ = 1203602400.

The previous prime is 1211230079. The next prime is 1211230121. The reversal of 1211230099 is 9900321121.

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 1211230099 - 2⁵ = 1211230067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211230019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421929 + ... + 424789.

It is an arithmetic number, because the mean of its divisors is an integer number (152358570).

Almost surely, 2^1211230099 is an apocalyptic number.

1211230099 is a deficient number, since it is larger than the sum of its proper divisors (7638461).

1211230099 is a wasteful number, since it uses less digits than its factorization.

1211230099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5381.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 1211230099 is about 34802.7312002952. The cubic root of 1211230099 is about 1065.9632153635.

The spelling of 1211230099 in words is "one billion, two hundred eleven million, two hundred thirty thousand, ninety-nine".