1201100220000 has 180 divisors, whose sum is σ = 4268170326420. Its totient is φ = 320293344000.

The previous prime is 1201100219999. The next prime is 1201100220011. The reversal of 1201100220000 is 220011021.

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3156390 + ... + 3516389.

It is an arithmetic number, because the mean of its divisors is an integer number (23712057369).

Almost surely, 2^{1201100220000} is an apocalyptic number.

1201100220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201100220000 is an abundant number, since it is smaller than the sum of its proper divisors (3067070106420).

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

1201100220000 is an equidigital number, since it uses as much as digits as its factorization.

1201100220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6672815 (or 6672789 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1201100220000 its reverse (220011021), we get a palindrome (1201320231021).

The spelling of 1201100220000 in words is "one trillion, two hundred one billion, one hundred million, two hundred twenty thousand".