211211111022109 has 8 divisors (see below), whose sum is σ = 230492769424128. Its totient is φ = 191942894004960.

The previous prime is 211211111022097. The next prime is 211211111022127. The reversal of 211211111022109 is 901220111112112.

211211111022109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 211211111022109 - 2⁹ = 211211111021597 is a prime.

It is a super-2 number, since 2×211211111022109² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211211111022809) 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, 3360313357 + ... + 3360376210.

It is an arithmetic number, because the mean of its divisors is an integer number (28811596178016).

Almost surely, 2^{211211111022109} is an apocalyptic number.

It is an amenable number.

211211111022109 is a deficient number, since it is larger than the sum of its proper divisors (19281658402019).

211211111022109 is a wasteful number, since it uses less digits than its factorization.

211211111022109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6720692435.

The product of its (nonzero) digits is 144, while the sum is 25.

The spelling of 211211111022109 in words is "two hundred eleven trillion, two hundred eleven billion, one hundred eleven million, twenty-two thousand, one hundred nine".