1212200113 has 32 divisors (see below), whose sum is σ = 1347770880. Its totient is φ = 1085736960.

The previous prime is 1212200107. The next prime is 1212200123. The reversal of 1212200113 is 3110022121.

It is not a de Polignac number, because 1212200113 - 2¹³ = 1212191921 is a prime.

It is a super-2 number, since 2×1212200113² = 2938858227914425538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1212200093 and 1212200102.

It is not an unprimeable number, because it can be changed into a prime (1212200123) 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 31 ways as a sum of consecutive naturals, for example, 5071848 + ... + 5072086.

It is an arithmetic number, because the mean of its divisors is an integer number (42117840).

Almost surely, 2^1212200113 is an apocalyptic number.

It is an amenable number.

1212200113 is a deficient number, since it is larger than the sum of its proper divisors (135570767).

1212200113 is a wasteful number, since it uses less digits than its factorization.

1212200113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1212200113 is about 34816.6643003031. The cubic root of 1212200113 is about 1066.2476984246.

Adding to 1212200113 its reverse (3110022121), we get a palindrome (4322222234).

The spelling of 1212200113 in words is "one billion, two hundred twelve million, two hundred thousand, one hundred thirteen".