12121001011010 has 16 divisors (see below), whose sum is σ = 21817860346872. Its totient is φ = 4848387398400.

The previous prime is 12121001010967. The next prime is 12121001011033. The reversal of 12121001011010 is 1011010012121.

It can be written as a sum of positive squares in 4 ways, for example, as 5702262219481 + 6418738791529 = 2387941^2 + 2533523^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12121001010982 and 12121001011000.

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, 2884220 + ... + 5706200.

Almost surely, 2^{12121001011010} is an apocalyptic number.

12121001011010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121001011010 is a deficient number, since it is larger than the sum of its proper divisors (9696859335862).

12121001011010 is a wasteful number, since it uses less digits than its factorization.

12121001011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3251509.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12121001011010 its reverse (1011010012121), we get a palindrome (13132011023131).

The spelling of 12121001011010 in words is "twelve trillion, one hundred twenty-one billion, one million, eleven thousand, ten".