1202222100 has 36 divisors (see below), whose sum is σ = 3478430144. Its totient is φ = 320592480.

The previous prime is 1202222081. The next prime is 1202222101. The reversal of 1202222100 is 12222021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202222101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2003404 + ... + 2004003.

Almost surely, 2^1202222100 is an apocalyptic number.

1202222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202222100 is an abundant number, since it is smaller than the sum of its proper divisors (2276208044).

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

1202222100 is a wasteful number, since it uses less digits than its factorization.

1202222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007424 (or 4007417 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1202222100 is about 34673.0745680276. The cubic root of 1202222100 is about 1063.3140907301.

Adding to 1202222100 its reverse (12222021), we get a palindrome (1214444121).

The spelling of 1202222100 in words is "one billion, two hundred two million, two hundred twenty-two thousand, one hundred".