12020321211000 has 64 divisors (see below), whose sum is σ = 37503402187680. Its totient is φ = 3205418988800.

The previous prime is 12020321210939. The next prime is 12020321211007. The reversal of 12020321211000 is 11212302021.

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 (12020321211007) 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, 2003383869 + ... + 2003389868.

Almost surely, 2^{12020321211000} is an apocalyptic number.

12020321211000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020321211000 is an abundant number, since it is smaller than the sum of its proper divisors (25483080976680).

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

12020321211000 is a wasteful number, since it uses less digits than its factorization.

12020321211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4006773761 (or 4006773747 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12020321211000 its reverse (11212302021), we get a palindrome (12031533513021).

The spelling of 12020321211000 in words is "twelve trillion, twenty billion, three hundred twenty-one million, two hundred eleven thousand".