11021211999999 has 56 divisors (see below), whose sum is σ = 16556354081280. Its totient is φ = 7333217371152.

The previous prime is 11021211999989. The next prime is 11021212000049. The reversal of 11021211999999 is 99999911212011.

It is not a de Polignac number, because 11021211999999 - 2²⁷ = 11021077782271 is a prime.

It is a super-2 number, since 2×11021211999999² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021211999989) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 935342662 + ... + 935354444.

Almost surely, 2^{11021211999999} is an apocalyptic number.

11021211999999 is a deficient number, since it is larger than the sum of its proper divisors (5535142081281).

11021211999999 is an equidigital number, since it uses as much as digits as its factorization.

11021211999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14183 (or 14168 counting only the distinct ones).

The product of its (nonzero) digits is 2125764, while the sum is 63.

The spelling of 11021211999999 in words is "eleven trillion, twenty-one billion, two hundred eleven million, nine hundred ninety-nine thousand, nine hundred ninety-nine".