2221111112210 has 16 divisors (see below), whose sum is σ = 4001082523416. Its totient is φ = 887759440128.

The previous prime is 2221111112177. The next prime is 2221111112243. The reversal of 2221111112210 is 122111111222.

It is an interprime number because it is at equal distance from previous prime (2221111112177) and next prime (2221111112243).

It can be written as a sum of positive squares in 4 ways, for example, as 2146860857089 + 74250255121 = 1465217^2 + 272489^2 .

It is a super-2 number, since 2×2221111112210² (a number of 25 digits) contains 22 as substring.

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, 85611977 + ... + 85637916.

Almost surely, 2^{2221111112210} is an apocalyptic number.

2221111112210 is a deficient number, since it is larger than the sum of its proper divisors (1779971411206).

2221111112210 is a wasteful number, since it uses less digits than its factorization.

2221111112210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171251197.

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

Adding to 2221111112210 its reverse (122111111222), we get a palindrome (2343222223432).

The spelling of 2221111112210 in words is "two trillion, two hundred twenty-one billion, one hundred eleven million, one hundred twelve thousand, two hundred ten".