1211021012212 has 24 divisors (see below), whose sum is σ = 2351134789920. Its totient is φ = 541134195360.

The previous prime is 1211021012207. The next prime is 1211021012213. The reversal of 1211021012212 is 2122101201121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211021012213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233244903 + ... + 233250094.

It is an arithmetic number, because the mean of its divisors is an integer number (97963949580).

Almost surely, 2^{1211021012212} is an apocalyptic number.

It is an amenable number.

1211021012212 is a deficient number, since it is larger than the sum of its proper divisors (1140113777708).

1211021012212 is a wasteful number, since it uses less digits than its factorization.

1211021012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466495071 (or 466495069 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1211021012212 its reverse (2122101201121), we get a palindrome (3333122213333).

The spelling of 1211021012212 in words is "one trillion, two hundred eleven billion, twenty-one million, twelve thousand, two hundred twelve".