101201001 has 16 divisors (see below), whose sum is σ = 147376128. Its totient is φ = 61261200.

The previous prime is 101200993. The next prime is 101201003. The reversal of 101201001 is 100102101.

It is not a de Polignac number, because 101201001 - 2³ = 101200993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101201003) 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, 42636 + ... + 44946.

It is an arithmetic number, because the mean of its divisors is an integer number (9211008).

Almost surely, 2^101201001 is an apocalyptic number.

101201001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

101201001 is a deficient number, since it is larger than the sum of its proper divisors (46175127).

101201001 is a wasteful number, since it uses less digits than its factorization.

101201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3652.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 101201001 is about 10059.8708242204. The cubic root of 101201001 is about 466.0096779413.

Adding to 101201001 its reverse (100102101), we get a palindrome (201303102).

It can be divided in two parts, 101 and 201001, that added together give a palindrome (201102).

The spelling of 101201001 in words is "one hundred one million, two hundred one thousand, one".