1222021110 has 32 divisors (see below), whose sum is σ = 2944553472. Its totient is φ = 324572000.

The previous prime is 1222021093. The next prime is 1222021121. The reversal of 1222021110 is 111202221.

It is a Curzon number.

It is a congruent number.

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, 73614 + ... + 88673.

It is an arithmetic number, because the mean of its divisors is an integer number (92017296).

Almost surely, 2^1222021110 is an apocalyptic number.

1222021110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222021110 is an abundant number, since it is smaller than the sum of its proper divisors (1722532362).

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

1222021110 is a wasteful number, since it uses less digits than its factorization.

1222021110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162548.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1222021110 is about 34957.4185259724. The cubic root of 1222021110 is about 1069.1194636585.

Adding to 1222021110 its reverse (111202221), we get a palindrome (1333223331).

The spelling of 1222021110 in words is "one billion, two hundred twenty-two million, twenty-one thousand, one hundred ten".