12100121011000 has 256 divisors, whose sum is σ = 31086896480640. Its totient is φ = 4371840000000.

The previous prime is 12100121010983. The next prime is 12100121011003. The reversal of 12100121011000 is 11012100121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100121011003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1222106050 + ... + 1222115950.

Almost surely, 2^{12100121011000} is an apocalyptic number.

12100121011000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12100121011000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15543448240320).

12100121011000 is an abundant number, since it is smaller than the sum of its proper divisors (18986775469640).

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

12100121011000 is a wasteful number, since it uses less digits than its factorization.

12100121011000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10635 (or 10621 counting only the distinct ones).

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

Adding to 12100121011000 its reverse (11012100121), we get a palindrome (12111133111121).

The spelling of 12100121011000 in words is "twelve trillion, one hundred billion, one hundred twenty-one million, eleven thousand".