2111220002100 has 144 divisors (see below), whose sum is σ = 6763238125056. Its totient is φ = 504171888000.

The previous prime is 2111220002093. The next prime is 2111220002119. The reversal of 2111220002100 is 12000221112.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4553256 + ... + 4995455.

It is an arithmetic number, because the mean of its divisors is an integer number (46966931424).

Almost surely, 2^{2111220002100} is an apocalyptic number.

2111220002100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111220002100 is an abundant number, since it is smaller than the sum of its proper divisors (4652018122956).

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

2111220002100 is a wasteful number, since it uses less digits than its factorization.

2111220002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9548806 (or 9548799 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2111220002100 its reverse (12000221112), we get a palindrome (2123220223212).

The spelling of 2111220002100 in words is "two trillion, one hundred eleven billion, two hundred twenty million, two thousand, one hundred".