211421243010 has 64 divisors (see below), whose sum is σ = 526047540480. Its totient is φ = 54316711680.

The previous prime is 211421242957. The next prime is 211421243023. The reversal of 211421243010 is 10342124112.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137499 + ... + 664641.

It is an arithmetic number, because the mean of its divisors is an integer number (8219492820).

Almost surely, 2^211421243010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211421243010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263023770240).

211421243010 is an abundant number, since it is smaller than the sum of its proper divisors (314626297470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211421243010 is a wasteful number, since it uses less digits than its factorization.

211421243010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527643.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 211421243010 its reverse (10342124112), we get a palindrome (221763367122).

The spelling of 211421243010 in words is "two hundred eleven billion, four hundred twenty-one million, two hundred forty-three thousand, ten".