12121012011000 has 64 divisors (see below), whose sum is σ = 37817557483680. Its totient is φ = 3232269868800.

The previous prime is 12121012010983. The next prime is 12121012011007. The reversal of 12121012011000 is 11021012121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121012011007) 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, 2020165669 + ... + 2020171668.

Almost surely, 2^{12121012011000} is an apocalyptic number.

12121012011000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12121012011000 is an abundant number, since it is smaller than the sum of its proper divisors (25696545472680).

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

12121012011000 is a wasteful number, since it uses less digits than its factorization.

12121012011000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040337361 (or 4040337347 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12121012011000 its reverse (11021012121), we get a palindrome (12132033023121).

The spelling of 12121012011000 in words is "twelve trillion, one hundred twenty-one billion, twelve million, eleven thousand".