12121200010 has 16 divisors (see below), whose sum is σ = 21822031872. Its totient is φ = 4847619600.

The previous prime is 12121199999. The next prime is 12121200023. The reversal of 12121200010 is 1000212121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a self number, because there is not a number n which added to its sum of digits gives 12121200010.

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, 46746 + ... + 162565.

It is an arithmetic number, because the mean of its divisors is an integer number (1363876992).

Almost surely, 2^12121200010 is an apocalyptic number.

12121200010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121200010 is a deficient number, since it is larger than the sum of its proper divisors (9700831862).

12121200010 is a wasteful number, since it uses less digits than its factorization.

12121200010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215109.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12121200010 its reverse (1000212121), we get a palindrome (13121412131).

The spelling of 12121200010 in words is "twelve billion, one hundred twenty-one million, two hundred thousand, ten".