7221012211111 has 32 divisors (see below), whose sum is σ = 8399845186560. Its totient is φ = 6157338840576.

The previous prime is 7221012211081. The next prime is 7221012211139. The reversal of 7221012211111 is 1111122101227.

It is a cyclic number.

It is not a de Polignac number, because 7221012211111 - 2⁷ = 7221012210983 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 (7221012281111) 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, 36727510 + ... + 36923596.

It is an arithmetic number, because the mean of its divisors is an integer number (262495162080).

Almost surely, 2^{7221012211111} is an apocalyptic number.

7221012211111 is a deficient number, since it is larger than the sum of its proper divisors (1178832975449).

7221012211111 is a wasteful number, since it uses less digits than its factorization.

7221012211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201103.

The product of its (nonzero) digits is 112, while the sum is 22.

Adding to 7221012211111 its reverse (1111122101227), we get a palindrome (8332134312338).

The spelling of 7221012211111 in words is "seven trillion, two hundred twenty-one billion, twelve million, two hundred eleven thousand, one hundred eleven".