221111000010105 has 32 divisors (see below), whose sum is σ = 357785464931328. Its totient is φ = 116592365260800.

The previous prime is 221111000010101. The next prime is 221111000010113. The reversal of 221111000010105 is 501010000111122.

221111000010105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221111000010105 - 2² = 221111000010101 is a prime.

It is a super-2 number, since 2×221111000010105² (a number of 29 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (221111000010101) 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, 75231316 + ... + 78115125.

It is an arithmetic number, because the mean of its divisors is an integer number (11180795779104).

Almost surely, 2^{221111000010105} is an apocalyptic number.

It is an amenable number.

221111000010105 is a deficient number, since it is larger than the sum of its proper divisors (136674464921223).

221111000010105 is a wasteful number, since it uses less digits than its factorization.

221111000010105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153347537.

The product of its (nonzero) digits is 20, while the sum is 15.

Adding to 221111000010105 its reverse (501010000111122), we get a palindrome (722121000121227).

The spelling of 221111000010105 in words is "two hundred twenty-one trillion, one hundred eleven billion, ten thousand, one hundred five".