12001211210040 has 128 divisors (see below), whose sum is σ = 38774627942400. Its totient is φ = 2954031229440.

The previous prime is 12001211209987. The next prime is 12001211210041. The reversal of 12001211210040 is 4001211210021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001211210041) 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, 45074505 + ... + 45339975.

It is an arithmetic number, because the mean of its divisors is an integer number (302926780800).

Almost surely, 2^{12001211210040} is an apocalyptic number.

12001211210040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001211210040 is an abundant number, since it is smaller than the sum of its proper divisors (26773416732360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12001211210040 is a wasteful number, since it uses less digits than its factorization.

12001211210040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294477 (or 294473 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12001211210040 its reverse (4001211210021), we get a palindrome (16002422420061).

The spelling of 12001211210040 in words is "twelve trillion, one billion, two hundred eleven million, two hundred ten thousand, forty".