1210212200 has 24 divisors (see below), whose sum is σ = 2813743830. Its totient is φ = 484084800.

The previous prime is 1210212197. The next prime is 1210212203. The reversal of 1210212200 is 22120121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1210212197) and next prime (1210212203).

It can be written as a sum of positive squares in 3 ways, for example, as 586511524 + 623700676 = 24218^2 + 24974^2 .

It is a super-2 number, since 2×1210212200² = 2929227138057680000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1210212203) 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 5 ways as a sum of consecutive naturals, for example, 3025331 + ... + 3025730.

Almost surely, 2^1210212200 is an apocalyptic number.

1210212200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210212200 is an abundant number, since it is smaller than the sum of its proper divisors (1603531630).

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

1210212200 is a wasteful number, since it uses less digits than its factorization.

1210212200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6051077 (or 6051068 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1210212200 is about 34788.1042886789. The cubic root of 1210212200 is about 1065.6645253555.

Adding to 1210212200 its reverse (22120121), we get a palindrome (1232332321).

The spelling of 1210212200 in words is "one billion, two hundred ten million, two hundred twelve thousand, two hundred".