211421321012 has 24 divisors (see below), whose sum is σ = 424865814240. Its totient is φ = 91042673760.

The previous prime is 211421320969. The next prime is 211421321077. The reversal of 211421321012 is 210123124112.

211421321012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126447323 + ... + 126448994.

It is an arithmetic number, because the mean of its divisors is an integer number (17702742260).

Almost surely, 2^211421321012 is an apocalyptic number.

211421321012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211421321012 is an abundant number, since it is smaller than the sum of its proper divisors (213444493228).

211421321012 is a wasteful number, since it uses less digits than its factorization.

211421321012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252896351 (or 252896349 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 211421321012 its reverse (210123124112), we get a palindrome (421544445124).

The spelling of 211421321012 in words is "two hundred eleven billion, four hundred twenty-one million, three hundred twenty-one thousand, twelve".