1225220110 has 8 divisors (see below), whose sum is σ = 2205396216. Its totient is φ = 490088040.

The previous prime is 1225220093. The next prime is 1225220119. The reversal of 1225220110 is 110225221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225220119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61260996 + ... + 61261015.

It is an arithmetic number, because the mean of its divisors is an integer number (275674527).

Almost surely, 2^1225220110 is an apocalyptic number.

1225220110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225220110 is a deficient number, since it is larger than the sum of its proper divisors (980176106).

1225220110 is a wasteful number, since it uses less digits than its factorization.

1225220110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122522018.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1225220110 is about 35003.1442873351. The cubic root of 1225220110 is about 1070.0515624263.

Adding to 1225220110 its reverse (110225221), we get a palindrome (1335445331).

The spelling of 1225220110 in words is "one billion, two hundred twenty-five million, two hundred twenty thousand, one hundred ten".