10221201111 has 32 divisors (see below), whose sum is σ = 15069966336. Its totient is φ = 6110640000.

The previous prime is 10221201101. The next prime is 10221201163. The reversal of 10221201111 is 11110212201.

It is not a de Polignac number, because 10221201111 - 2¹¹ = 10221199063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221201101) 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, 917706 + ... + 928776.

It is an arithmetic number, because the mean of its divisors is an integer number (470936448).

Almost surely, 2^10221201111 is an apocalyptic number.

10221201111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10221201111 is a deficient number, since it is larger than the sum of its proper divisors (4848765225).

10221201111 is a wasteful number, since it uses less digits than its factorization.

10221201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11463.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10221201111 its reverse (11110212201), we get a palindrome (21331413312).

The spelling of 10221201111 in words is "ten billion, two hundred twenty-one million, two hundred one thousand, one hundred eleven".