1222300100 has 54 divisors (see below), whose sum is σ = 3085447050. Its totient is φ = 419072640.

The previous prime is 1222300061. The next prime is 1222300103. The reversal of 1222300100 is 10032221.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 263283076 + 959017024 = 16226^2 + 30968^2 .

It is not an unprimeable number, because it can be changed into a prime (1222300103) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 119825 + ... + 129624.

Almost surely, 2^1222300100 is an apocalyptic number.

1222300100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222300100 is an abundant number, since it is smaller than the sum of its proper divisors (1863146950).

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

1222300100 is a wasteful number, since it uses less digits than its factorization.

1222300100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249477 (or 249463 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1222300100 is about 34961.4087244779. The cubic root of 1222300100 is about 1069.2008182114.

Adding to 1222300100 its reverse (10032221), we get a palindrome (1232332321).

The spelling of 1222300100 in words is "one billion, two hundred twenty-two million, three hundred thousand, one hundred".