2221222021110 has 48 divisors (see below), whose sum is σ = 5813423497440. Its totient is φ = 588403180800.

The previous prime is 2221222021103. The next prime is 2221222021169. The reversal of 2221222021110 is 111202221222.

It is a happy number.

2221222021110 is a `hidden beast` number, since 2 + 221 + 2 + 220 + 211 + 10 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81709075 + ... + 81736254.

It is an arithmetic number, because the mean of its divisors is an integer number (121112989530).

Almost surely, 2^{2221222021110} is an apocalyptic number.

2221222021110 is an abundant number, since it is smaller than the sum of its proper divisors (3592201476330).

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

2221222021110 is a wasteful number, since it uses less digits than its factorization.

2221222021110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163445493 (or 163445490 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2221222021110 its reverse (111202221222), we get a palindrome (2332424242332).

The spelling of 2221222021110 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-two million, twenty-one thousand, one hundred ten".