12120121010 has 8 divisors (see below), whose sum is σ = 21816217836. Its totient is φ = 4848048400.

The previous prime is 12120120983. The next prime is 12120121121. The reversal of 12120121010 is 1012102121.

It can be written as a sum of positive squares in 2 ways, for example, as 11099254609 + 1020866401 = 105353^2 + 31951^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12120120982 and 12120121000.

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, 606006041 + ... + 606006060.

Almost surely, 2^12120121010 is an apocalyptic number.

12120121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12120121010 is a deficient number, since it is larger than the sum of its proper divisors (9696096826).

12120121010 is a wasteful number, since it uses less digits than its factorization.

12120121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212012108.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12120121010 its reverse (1012102121), we get a palindrome (13132223131).

The spelling of 12120121010 in words is "twelve billion, one hundred twenty million, one hundred twenty-one thousand, ten".