201021401 has 8 divisors (see below), whose sum is σ = 235342464. Its totient is φ = 168101280.

The previous prime is 201021367. The next prime is 201021419. The reversal of 201021401 is 104120102.

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 201021401 - 2¹⁰ = 201020377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201021461) 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, 349925 + ... + 350498.

It is an arithmetic number, because the mean of its divisors is an integer number (29417808).

Almost surely, 2^201021401 is an apocalyptic number.

It is an amenable number.

201021401 is a deficient number, since it is larger than the sum of its proper divisors (34321063).

201021401 is an equidigital number, since it uses as much as digits as its factorization.

201021401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700471.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 201021401 is about 14178.2016137450. The cubic root of 201021401 is about 585.7973892537.

Adding to 201021401 its reverse (104120102), we get a palindrome (305141503).

The spelling of 201021401 in words is "two hundred one million, twenty-one thousand, four hundred one".