211120011121099 has 4 divisors (see below), whose sum is σ = 212731614259560. Its totient is φ = 209508407982640.

The previous prime is 211120011121087. The next prime is 211120011121109. The reversal of 211120011121099 is 990121110021112.

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 211120011121099 - 2¹⁷ = 211120010990027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211120011121099.

It is not an unprimeable number, because it can be changed into a prime (211120011121039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805801569034 + ... + 805801569295.

It is an arithmetic number, because the mean of its divisors is an integer number (53182903564890).

Almost surely, 2^{211120011121099} is an apocalyptic number.

211120011121099 is a deficient number, since it is larger than the sum of its proper divisors (1611603138461).

211120011121099 is a wasteful number, since it uses less digits than its factorization.

211120011121099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611603138460.

The product of its (nonzero) digits is 648, while the sum is 31.

The spelling of 211120011121099 in words is "two hundred eleven trillion, one hundred twenty billion, eleven million, one hundred twenty-one thousand, ninety-nine".