211122212021999 has 8 divisors (see below), whose sum is σ = 216365117892000. Its totient is φ = 205883762515200.

The previous prime is 211122212021957. The next prime is 211122212022041. The reversal of 211122212021999 is 999120212221112.

211122212021999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (211122212021957) and next prime (211122212022041).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211122212021999 - 2¹² = 211122212017903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211122212021909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1113994874 + ... + 1114184375.

It is an arithmetic number, because the mean of its divisors is an integer number (27045639736500).

Almost surely, 2^{211122212021999} is an apocalyptic number.

211122212021999 is a deficient number, since it is larger than the sum of its proper divisors (5242905870001).

211122212021999 is a wasteful number, since it uses less digits than its factorization.

211122212021999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228181601.

The product of its (nonzero) digits is 46656, while the sum is 44.

The spelling of 211122212021999 in words is "two hundred eleven trillion, one hundred twenty-two billion, two hundred twelve million, twenty-one thousand, nine hundred ninety-nine".