121232221010 has 8 divisors (see below), whose sum is σ = 218217997836. Its totient is φ = 48492888400.

The previous prime is 121232221007. The next prime is 121232221021. The reversal of 121232221010 is 10122232121.

It can be written as a sum of positive squares in 2 ways, for example, as 99481575649 + 21750645361 = 315407^2 + 147481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×121232221010² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121232221010.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6061611041 + ... + 6061611060.

Almost surely, 2^121232221010 is an apocalyptic number.

121232221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121232221010 is a deficient number, since it is larger than the sum of its proper divisors (96985776826).

121232221010 is a wasteful number, since it uses less digits than its factorization.

121232221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12123222108.

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

Adding to 121232221010 its reverse (10122232121), we get a palindrome (131354453131).

The spelling of 121232221010 in words is "one hundred twenty-one billion, two hundred thirty-two million, two hundred twenty-one thousand, ten".