211222221201109 has 4 divisors (see below), whose sum is σ = 211386852707616. Its totient is φ = 211057589694604.

The previous prime is 211222221201071. The next prime is 211222221201139. The reversal of 211222221201109 is 901102122222112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211222221201109 - 2²¹ = 211222219103957 is a prime.

It is a super-2 number, since 2×211222221201109² (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 (211222221201139) 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, 82315751329 + ... + 82315753894.

It is an arithmetic number, because the mean of its divisors is an integer number (52846713176904).

Almost surely, 2^{211222221201109} is an apocalyptic number.

It is an amenable number.

211222221201109 is a deficient number, since it is larger than the sum of its proper divisors (164631506507).

211222221201109 is a wasteful number, since it uses less digits than its factorization.

211222221201109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164631506506.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 211222221201109 in words is "two hundred eleven trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred one thousand, one hundred nine".