100261081 has 16 divisors (see below), whose sum is σ = 107611200. Its totient is φ = 93139200.

The previous prime is 100260973. The next prime is 100261111. The reversal of 100261081 is 180162001.

It is a cyclic number.

It is not a de Polignac number, because 100261081 - 2²¹ = 98163929 is a prime.

It is a super-2 number, since 2×100261081² = 20104568726577122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100262081) 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, 356661 + ... + 356941.

It is an arithmetic number, because the mean of its divisors is an integer number (6725700).

Almost surely, 2^100261081 is an apocalyptic number.

It is an amenable number.

100261081 is a deficient number, since it is larger than the sum of its proper divisors (7350119).

100261081 is a wasteful number, since it uses less digits than its factorization.

100261081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 100261081 is about 10013.0455406934. The cubic root of 100261081 is about 464.5624758818.

The spelling of 100261081 in words is "one hundred million, two hundred sixty-one thousand, eighty-one".