2221112112102 has 48 divisors (see below), whose sum is σ = 5190296031648. Its totient is φ = 682403581440.

The previous prime is 2221112112091. The next prime is 2221112112137. The reversal of 2221112112102 is 2012112111222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6894474 + ... + 7209437.

It is an arithmetic number, because the mean of its divisors is an integer number (108131167326).

Almost surely, 2^{2221112112102} is an apocalyptic number.

2221112112102 is an abundant number, since it is smaller than the sum of its proper divisors (2969183919546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221112112102 is a wasteful number, since it uses less digits than its factorization.

2221112112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14104605 (or 14104602 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2221112112102 its reverse (2012112111222), we get a palindrome (4233224223324).

The spelling of 2221112112102 in words is "two trillion, two hundred twenty-one billion, one hundred twelve million, one hundred twelve thousand, one hundred two".