12031121000002 has 32 divisors (see below), whose sum is σ = 19457655235200. Its totient is φ = 5546323819008.

The previous prime is 12031120999987. The next prime is 12031121000009. The reversal of 12031121000002 is 20000012113021.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (12031121000009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79092274 + ... + 79244242.

It is an arithmetic number, because the mean of its divisors is an integer number (608051726100).

Almost surely, 2^{12031121000002} is an apocalyptic number.

12031121000002 is a deficient number, since it is larger than the sum of its proper divisors (7426534235198).

12031121000002 is a wasteful number, since it uses less digits than its factorization.

12031121000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155530.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12031121000002 its reverse (20000012113021), we get a palindrome (32031133113023).

The spelling of 12031121000002 in words is "twelve trillion, thirty-one billion, one hundred twenty-one million, two", and thus it is an aban number.