2221121112110 has 64 divisors (see below), whose sum is σ = 4135406477760. Its totient is φ = 858557905920.

The previous prime is 2221121111981. The next prime is 2221121112113. The reversal of 2221121112110 is 112111211222.

It is a super-5 number, since 5×2221121112110⁵ (a number of 63 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221121112113) 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, 8393237 + ... + 8653823.

It is an arithmetic number, because the mean of its divisors is an integer number (64615726215).

Almost surely, 2^{2221121112110} is an apocalyptic number.

2221121112110 is a deficient number, since it is larger than the sum of its proper divisors (1914285365650).

2221121112110 is a wasteful number, since it uses less digits than its factorization.

2221121112110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260901.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2221121112110 its reverse (112111211222), we get a palindrome (2333232323332).

The spelling of 2221121112110 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred twelve thousand, one hundred ten".