210221231012 has 24 divisors (see below), whose sum is σ = 396882507000. Its totient is φ = 96854651136.

The previous prime is 210221230981. The next prime is 210221231021. The reversal of 210221231012 is 210132122012.

It can be written as a sum of positive squares in 4 ways, for example, as 20775186496 + 189446044516 = 144136^2 + 435254^2 .

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, 3522887 + ... + 3582062.

It is an arithmetic number, because the mean of its divisors is an integer number (16536771125).

Almost surely, 2^210221231012 is an apocalyptic number.

It is an amenable number.

210221231012 is a deficient number, since it is larger than the sum of its proper divisors (186661275988).

210221231012 is a wasteful number, since it uses less digits than its factorization.

210221231012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7105535 (or 7105533 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 210221231012 its reverse (210132122012), we get a palindrome (420353353024).

The spelling of 210221231012 in words is "two hundred ten billion, two hundred twenty-one million, two hundred thirty-one thousand, twelve".