2211222012111 has 36 divisors (see below), whose sum is σ = 3730871677104. Its totient is φ = 1258312406400.

The previous prime is 2211222012107. The next prime is 2211222012121. The reversal of 2211222012111 is 1112102221122.

2211222012111 is a `hidden beast` number, since 221 + 12 + 220 + 1 + 211 + 1 = 666.

It is not a de Polignac number, because 2211222012111 - 2² = 2211222012107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211222012101) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10296435 + ... + 10508996.

It is an arithmetic number, because the mean of its divisors is an integer number (103635324364).

Almost surely, 2^{2211222012111} is an apocalyptic number.

2211222012111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2211222012111 is a deficient number, since it is larger than the sum of its proper divisors (1519649664993).

2211222012111 is a wasteful number, since it uses less digits than its factorization.

2211222012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20805692 (or 20805682 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2211222012111 its reverse (1112102221122), we get a palindrome (3323324233233).

The spelling of 2211222012111 in words is "two trillion, two hundred eleven billion, two hundred twenty-two million, twelve thousand, one hundred eleven".