2101025620221 has 24 divisors (see below), whose sum is σ = 3084600946560. Its totient is φ = 1271110864320.

The previous prime is 2101025620201. The next prime is 2101025620229. The reversal of 2101025620221 is 1220265201012.

It is not a de Polignac number, because 2101025620221 - 2⁵ = 2101025620189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101025620191 and 2101025620200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101025620229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4879525 + ... + 5292618.

It is an arithmetic number, because the mean of its divisors is an integer number (128525039440).

Almost surely, 2^{2101025620221} is an apocalyptic number.

It is an amenable number.

2101025620221 is a deficient number, since it is larger than the sum of its proper divisors (983575326339).

2101025620221 is a wasteful number, since it uses less digits than its factorization.

2101025620221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10172737 (or 10172726 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The spelling of 2101025620221 in words is "two trillion, one hundred one billion, twenty-five million, six hundred twenty thousand, two hundred twenty-one".