211421333012 has 24 divisors (see below), whose sum is σ = 381204137832. Its totient is φ = 102553344000.

The previous prime is 211421332999. The next prime is 211421333027. The reversal of 211421333012 is 210333124112.

It can be written as a sum of positive squares in 4 ways, for example, as 11116750096 + 200304582916 = 105436^2 + 447554^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5916989 + ... + 5952612.

It is an arithmetic number, because the mean of its divisors is an integer number (15883505743).

Almost surely, 2^211421333012 is an apocalyptic number.

It is an amenable number.

211421333012 is a deficient number, since it is larger than the sum of its proper divisors (169782804820).

211421333012 is a wasteful number, since it uses less digits than its factorization.

211421333012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11869739 (or 11869737 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 211421333012 its reverse (210333124112), we get a palindrome (421754457124).

The spelling of 211421333012 in words is "two hundred eleven billion, four hundred twenty-one million, three hundred thirty-three thousand, twelve".