10201099981 has 16 divisors (see below), whose sum is σ = 10851278400. Its totient is φ = 9562468608.

The previous prime is 10201099919. The next prime is 10201100009. The reversal of 10201099981 is 18999010201.

It is a cyclic number.

It is not a de Polignac number, because 10201099981 - 2¹⁷ = 10200968909 is a prime.

It is a super-3 number, since 3×10201099981³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201099481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2048811 + ... + 2053783.

It is an arithmetic number, because the mean of its divisors is an integer number (678204900).

Almost surely, 2^10201099981 is an apocalyptic number.

It is an amenable number.

10201099981 is a deficient number, since it is larger than the sum of its proper divisors (650178419).

10201099981 is a wasteful number, since it uses less digits than its factorization.

10201099981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6108.

The product of its (nonzero) digits is 11664, while the sum is 40.

The spelling of 10201099981 in words is "ten billion, two hundred one million, ninety-nine thousand, nine hundred eighty-one".