1211122110099 has 16 divisors (see below), whose sum is σ = 1761653556864. Its totient is φ = 734004484800.

The previous prime is 1211122110089. The next prime is 1211122110137. The reversal of 1211122110099 is 9900112211121.

It is not a de Polignac number, because 1211122110099 - 2⁷ = 1211122109971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211122110089) 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, 3427647 + ... + 3764439.

It is an arithmetic number, because the mean of its divisors is an integer number (110103347304).

Almost surely, 2^{1211122110099} is an apocalyptic number.

1211122110099 is a deficient number, since it is larger than the sum of its proper divisors (550531446765).

1211122110099 is a wasteful number, since it uses less digits than its factorization.

1211122110099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445778.

The product of its (nonzero) digits is 648, while the sum is 30.

The spelling of 1211122110099 in words is "one trillion, two hundred eleven billion, one hundred twenty-two million, one hundred ten thousand, ninety-nine".