212021031212 has 6 divisors (see below), whose sum is σ = 371036804628. Its totient is φ = 106010515604.

The previous prime is 212021031199. The next prime is 212021031223. The reversal of 212021031212 is 212130120212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26502628898 + ... + 26502628905.

It is an arithmetic number, because the mean of its divisors is an integer number (61839467438).

Almost surely, 2^212021031212 is an apocalyptic number.

It is an amenable number.

212021031212 is a deficient number, since it is larger than the sum of its proper divisors (159015773416).

212021031212 is a wasteful number, since it uses less digits than its factorization.

212021031212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53005257807 (or 53005257805 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212021031212 its reverse (212130120212), we get a palindrome (424151151424).

The spelling of 212021031212 in words is "two hundred twelve billion, twenty-one million, thirty-one thousand, two hundred twelve".