12121100010010 has 64 divisors (see below), whose sum is σ = 22631140675584. Its totient is φ = 4671020390400.

The previous prime is 12121100010007. The next prime is 12121100010011. The reversal of 12121100010010 is 1001000112121.

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

It is not an unprimeable number, because it can be changed into a prime (12121100010011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12072727 + ... + 13038133.

It is an arithmetic number, because the mean of its divisors is an integer number (353611573056).

Almost surely, 2^{12121100010010} is an apocalyptic number.

12121100010010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12121100010010 is a deficient number, since it is larger than the sum of its proper divisors (10510040665574).

12121100010010 is a wasteful number, since it uses less digits than its factorization.

12121100010010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965839.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12121100010010 its reverse (1001000112121), we get a palindrome (13122100122131).

The spelling of 12121100010010 in words is "twelve trillion, one hundred twenty-one billion, one hundred million, ten thousand, ten".