21112120222210 has 32 divisors (see below), whose sum is σ = 38254938441984. Its totient is φ = 8388603000000.

The previous prime is 21112120222187. The next prime is 21112120222223. The reversal of 21112120222210 is 1222202121112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41652100 + ... + 42155920.

It is an arithmetic number, because the mean of its divisors is an integer number (1195466826312).

Almost surely, 2^{21112120222210} is an apocalyptic number.

21112120222210 is a deficient number, since it is larger than the sum of its proper divisors (17142818219774).

21112120222210 is a wasteful number, since it uses less digits than its factorization.

21112120222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531730.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21112120222210 its reverse (1222202121112), we get a palindrome (22334322343322).

The spelling of 21112120222210 in words is "twenty-one trillion, one hundred twelve billion, one hundred twenty million, two hundred twenty-two thousand, two hundred ten".