211421012 has 24 divisors (see below), whose sum is σ = 404120640. Its totient is φ = 95981760.

The previous prime is 211421009. The next prime is 211421033. The reversal of 211421012 is 210124112.

It is a happy number.

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, 40064 + ... + 45032.

It is an arithmetic number, because the mean of its divisors is an integer number (16838360).

Almost surely, 2^211421012 is an apocalyptic number.

211421012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211421012 is a deficient number, since it is larger than the sum of its proper divisors (192699628).

211421012 is a wasteful number, since it uses less digits than its factorization.

211421012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5951 (or 5949 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 211421012 is about 14540.3236552699. The cubic root of 211421012 is about 595.7298784938.

Adding to 211421012 its reverse (210124112), we get a palindrome (421545124).

The spelling of 211421012 in words is "two hundred eleven million, four hundred twenty-one thousand, twelve".