101201021 has 8 divisors (see below), whose sum is σ = 103317024. Its totient is φ = 99102960.

The previous prime is 101201003. The next prime is 101201041. The reversal of 101201021 is 120102101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101201021 - 2²² = 97006717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101201041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7226 + ... + 15956.

It is an arithmetic number, because the mean of its divisors is an integer number (12914628).

Almost surely, 2^101201021 is an apocalyptic number.

It is an amenable number.

101201021 is a deficient number, since it is larger than the sum of its proper divisors (2116003).

101201021 is an equidigital number, since it uses as much as digits as its factorization.

101201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8971.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 101201021 is about 10059.8718182689. The cubic root of 101201021 is about 466.0097086399.

Adding to 101201021 its reverse (120102101), we get a palindrome (221303122).

The spelling of 101201021 in words is "one hundred one million, two hundred one thousand, twenty-one".