1201222212 has 12 divisors (see below), whose sum is σ = 2802851856. Its totient is φ = 400407400.

The previous prime is 1201222207. The next prime is 1201222259. The reversal of 1201222212 is 2122221021.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1201222191 and 1201222200.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 50050914 + ... + 50050937.

It is an arithmetic number, because the mean of its divisors is an integer number (233570988).

Almost surely, 2^1201222212 is an apocalyptic number.

1201222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201222212 is an abundant number, since it is smaller than the sum of its proper divisors (1601629644).

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

1201222212 is a wasteful number, since it uses less digits than its factorization.

1201222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100101858 (or 100101856 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1201222212 is about 34658.6527724319. The cubic root of 1201222212 is about 1063.0192228936.

Adding to 1201222212 its reverse (2122221021), we get a palindrome (3323443233).

The spelling of 1201222212 in words is "one billion, two hundred one million, two hundred twenty-two thousand, two hundred twelve".