203101212 has 48 divisors (see below), whose sum is σ = 500605952. Its totient is φ = 63987840.

The previous prime is 203101211. The next prime is 203101231. The reversal of 203101212 is 212101302.

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 (203101211) 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 15 ways as a sum of consecutive naturals, for example, 9648 + ... + 22344.

Almost surely, 2^203101212 is an apocalyptic number.

It is an amenable number.

203101212 is an abundant number, since it is smaller than the sum of its proper divisors (297504740).

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

203101212 is a wasteful number, since it uses less digits than its factorization.

203101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12778 (or 12776 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 203101212 is about 14251.3582510580. The cubic root of 203101212 is about 587.8107239371.

Adding to 203101212 its reverse (212101302), we get a palindrome (415202514).

The spelling of 203101212 in words is "two hundred three million, one hundred one thousand, two hundred twelve".