11011021221099 has 16 divisors (see below), whose sum is σ = 14688020812032. Its totient is φ = 7337351549088.

The previous prime is 11011021221071. The next prime is 11011021221131. The reversal of 11011021221099 is 99012212011011.

It is not a de Polignac number, because 11011021221099 - 2⁴³ = 2214928198891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11011021221029) 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, 221137684 + ... + 221187470.

It is an arithmetic number, because the mean of its divisors is an integer number (918001300752).

Almost surely, 2^{11011021221099} is an apocalyptic number.

11011021221099 is a deficient number, since it is larger than the sum of its proper divisors (3676999590933).

11011021221099 is a wasteful number, since it uses less digits than its factorization.

11011021221099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81746.

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

The spelling of 11011021221099 in words is "eleven trillion, eleven billion, twenty-one million, two hundred twenty-one thousand, ninety-nine".