212222210001111 has 32 divisors (see below), whose sum is σ = 320789540836800. Its totient is φ = 138636535910400.

The previous prime is 212222210001103. The next prime is 212222210001133. The reversal of 212222210001111 is 111100012222212.

212222210001111 is a `hidden beast` number, since 212 + 222 + 210 + 0 + 0 + 11 + 11 = 666.

It is not a de Polignac number, because 212222210001111 - 2³ = 212222210001103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212222210001811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 400882866 + ... + 401411903.

It is an arithmetic number, because the mean of its divisors is an integer number (10024673151150).

Almost surely, 2^{212222210001111} is an apocalyptic number.

212222210001111 is a deficient number, since it is larger than the sum of its proper divisors (108567330835689).

212222210001111 is a wasteful number, since it uses less digits than its factorization.

212222210001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802294976 (or 802294970 counting only the distinct ones).

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

Adding to 212222210001111 its reverse (111100012222212), we get a palindrome (323322222223323).

The spelling of 212222210001111 in words is "two hundred twelve trillion, two hundred twenty-two billion, two hundred ten million, one thousand, one hundred eleven".