1212210101099 has 4 divisors (see below), whose sum is σ = 1218363452064. Its totient is φ = 1206056750136.

The previous prime is 1212210101093. The next prime is 1212210101111. The reversal of 1212210101099 is 9901010122121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1212210101099 - 2³⁶ = 1143490624363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212210101093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3076675187 + ... + 3076675580.

It is an arithmetic number, because the mean of its divisors is an integer number (304590863016).

Almost surely, 2^{1212210101099} is an apocalyptic number.

1212210101099 is a deficient number, since it is larger than the sum of its proper divisors (6153350965).

1212210101099 is an equidigital number, since it uses as much as digits as its factorization.

1212210101099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6153350964.

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 1212210101099 in words is "one trillion, two hundred twelve billion, two hundred ten million, one hundred one thousand, ninety-nine".