2221101111112 has 64 divisors (see below), whose sum is σ = 4864557222000. Its totient is φ = 941289922560.

The previous prime is 2221101111011. The next prime is 2221101111113. The reversal of 2221101111112 is 2111111011222.

It can be written as a sum of positive squares in 8 ways, for example, as 89285025636 + 2131816085476 = 298806^2 + 1460074^2 .

It is not an unprimeable number, because it can be changed into a prime (2221101111113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15247987 + ... + 15392962.

Almost surely, 2^{2221101111112} is an apocalyptic number.

It is an amenable number.

2221101111112 is an abundant number, since it is smaller than the sum of its proper divisors (2643456110888).

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

2221101111112 is a wasteful number, since it uses less digits than its factorization.

2221101111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30641026 (or 30641022 counting only the distinct ones).

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

Adding to 2221101111112 its reverse (2111111011222), we get a palindrome (4332212122334).

The spelling of 2221101111112 in words is "two trillion, two hundred twenty-one billion, one hundred one million, one hundred eleven thousand, one hundred twelve".