210221111112222 has 16 divisors (see below), whose sum is σ = 480505396828032. Its totient is φ = 60063174603480.

The previous prime is 210221111112113. The next prime is 210221111112277. The reversal of 210221111112222 is 222211111122012.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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, 2502632275104 + ... + 2502632275187.

It is an arithmetic number, because the mean of its divisors is an integer number (30031587301752).

Almost surely, 2^{210221111112222} is an apocalyptic number.

210221111112222 is an abundant number, since it is smaller than the sum of its proper divisors (270284285715810).

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

210221111112222 is a wasteful number, since it uses less digits than its factorization.

210221111112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5005264550303.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 210221111112222 its reverse (222211111122012), we get a palindrome (432432222234234).

The spelling of 210221111112222 in words is "two hundred ten trillion, two hundred twenty-one billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty-two".