1210000234221 has 48 divisors (see below), whose sum is σ = 1801542722304. Its totient is φ = 782014995072.

The previous prime is 1210000234199. The next prime is 1210000234241. The reversal of 1210000234221 is 1224320000121.

It is a happy number.

1210000234221 is a `hidden beast` number, since 1 + 210 + 0 + 0 + 0 + 234 + 221 = 666.

It is not a de Polignac number, because 1210000234221 - 2²¹ = 1209998137069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210000234194 and 1210000234203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210000234241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 156792855 + ... + 156800571.

It is an arithmetic number, because the mean of its divisors is an integer number (37532140048).

Almost surely, 2^{1210000234221} is an apocalyptic number.

It is an amenable number.

1210000234221 is a deficient number, since it is larger than the sum of its proper divisors (591542488083).

1210000234221 is a wasteful number, since it uses less digits than its factorization.

1210000234221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9410 (or 9407 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1210000234221 its reverse (1224320000121), we get a palindrome (2434320234342).

The spelling of 1210000234221 in words is "one trillion, two hundred ten billion, two hundred thirty-four thousand, two hundred twenty-one".