221111201102 has 16 divisors (see below), whose sum is σ = 365883706800. Its totient is φ = 99375819840.

The previous prime is 221111201093. The next prime is 221111201111. The reversal of 221111201102 is 201102111122.

It is an interprime number because it is at equal distance from previous prime (221111201093) and next prime (221111201111).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56461577 + ... + 56465492.

It is an arithmetic number, because the mean of its divisors is an integer number (22867731675).

Almost surely, 2^221111201102 is an apocalyptic number.

221111201102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221111201102 is a deficient number, since it is larger than the sum of its proper divisors (144772505698).

221111201102 is a wasteful number, since it uses less digits than its factorization.

221111201102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112927171.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221111201102 its reverse (201102111122), we get a palindrome (422213312224).

The spelling of 221111201102 in words is "two hundred twenty-one billion, one hundred eleven million, two hundred one thousand, one hundred two".