221120010105 has 32 divisors (see below), whose sum is σ = 354828432384. Its totient is φ = 117585564096.

The previous prime is 221120010053. The next prime is 221120010113. The reversal of 221120010105 is 501010021122.

It is not a de Polignac number, because 221120010105 - 2¹⁶ = 221119944569 is a prime.

It is a super-2 number, since 2×221120010105² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10668162 + ... + 10688868.

It is an arithmetic number, because the mean of its divisors is an integer number (11088388512).

Almost surely, 2^221120010105 is an apocalyptic number.

It is an amenable number.

221120010105 is a deficient number, since it is larger than the sum of its proper divisors (133708422279).

221120010105 is a wasteful number, since it uses less digits than its factorization.

221120010105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22765.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 221120010105 its reverse (501010021122), we get a palindrome (722130031227).

The spelling of 221120010105 in words is "two hundred twenty-one billion, one hundred twenty million, ten thousand, one hundred five".