101982001 has 4 divisors (see below), whose sum is σ = 111253104. Its totient is φ = 92710900.

The previous prime is 101981989. The next prime is 101982029. The reversal of 101982001 is 100289101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100289101 = 11 ⋅9117191.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101982001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101982071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4635535 + ... + 4635556.

It is an arithmetic number, because the mean of its divisors is an integer number (27813276).

Almost surely, 2^101982001 is an apocalyptic number.

101982001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

101982001 is a deficient number, since it is larger than the sum of its proper divisors (9271103).

101982001 is an equidigital number, since it uses as much as digits as its factorization.

101982001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9271102.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 101982001 is about 10098.6138157670. The cubic root of 101982001 is about 467.2053884591.

The spelling of 101982001 in words is "one hundred one million, nine hundred eighty-two thousand, one".