201402221 has 4 divisors (see below), whose sum is σ = 204238944. Its totient is φ = 198565500.

The previous prime is 201402217. The next prime is 201402233. The reversal of 201402221 is 122204102.

201402221 = 464² + 465² + ... + 889².

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.

It is a cyclic number.

It is not a de Polignac number, because 201402221 - 2² = 201402217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201402196 and 201402205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201402241) 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, 1418255 + ... + 1418396.

It is an arithmetic number, because the mean of its divisors is an integer number (51059736).

Almost surely, 2^201402221 is an apocalyptic number.

It is an amenable number.

201402221 is a deficient number, since it is larger than the sum of its proper divisors (2836723).

201402221 is an equidigital number, since it uses as much as digits as its factorization.

201402221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836722.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 201402221 is about 14191.6250302775. The cubic root of 201402221 is about 586.1670723441.

Adding to 201402221 its reverse (122204102), we get a palindrome (323606323).

The spelling of 201402221 in words is "two hundred one million, four hundred two thousand, two hundred twenty-one".