212221031010 has 64 divisors (see below), whose sum is σ = 525942042624. Its totient is φ = 54747806400.

The previous prime is 212221030999. The next prime is 212221031053. The reversal of 212221031010 is 10130122212.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 2762337 + ... + 2838123.

It is an arithmetic number, because the mean of its divisors is an integer number (8217844416).

Almost surely, 2^212221031010 is an apocalyptic number.

212221031010 is an abundant number, since it is smaller than the sum of its proper divisors (313721011614).

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

212221031010 is a wasteful number, since it uses less digits than its factorization.

212221031010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78839.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 212221031010 its reverse (10130122212), we get a palindrome (222351153222).

The spelling of 212221031010 in words is "two hundred twelve billion, two hundred twenty-one million, thirty-one thousand, ten".