2211200002128 has 160 divisors (see below), whose sum is σ = 6219111451392. Its totient is φ = 672924672000.

The previous prime is 2211200002127. The next prime is 2211200002133. The reversal of 2211200002128 is 8212000021122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211200002127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61556493 + ... + 61592403.

Almost surely, 2^{2211200002128} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2211200002128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3109555725696).

2211200002128 is an abundant number, since it is smaller than the sum of its proper divisors (4007911449264).

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

2211200002128 is a wasteful number, since it uses less digits than its factorization.

2211200002128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37013 (or 37007 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The spelling of 2211200002128 in words is "two trillion, two hundred eleven billion, two hundred million, two thousand, one hundred twenty-eight".