10201021 has 8 divisors (see below), whose sum is σ = 10506240. Its totient is φ = 9899568.

The previous prime is 10201013. The next prime is 10201049. The reversal of 10201021 is 12010201.

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 10201021 - 2³ = 10201013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10200995 and 10201013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201001) 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, 5115 + ... + 6823.

It is an arithmetic number, because the mean of its divisors is an integer number (1313280).

Almost surely, 2^10201021 is an apocalyptic number.

It is an amenable number.

10201021 is a deficient number, since it is larger than the sum of its proper divisors (305219).

10201021 is a wasteful number, since it uses less digits than its factorization.

10201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 10201021 is about 3193.9037242848. The cubic root of 10201021 is about 216.8775243805.

Adding to 10201021 its reverse (12010201), we get a palindrome (22211222).

The spelling of 10201021 in words is "ten million, two hundred one thousand, twenty-one".