1421020201 has 8 divisors (see below), whose sum is σ = 1491686784. Its totient is φ = 1351093920.

The previous prime is 1421020177. The next prime is 1421020229. The reversal of 1421020201 is 1020201241.

It is a happy number.

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 1421020201 - 2¹¹ = 1421018153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421020291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181140 + ... + 188821.

It is an arithmetic number, because the mean of its divisors is an integer number (186460848).

Almost surely, 2^1421020201 is an apocalyptic number.

It is an amenable number.

1421020201 is a deficient number, since it is larger than the sum of its proper divisors (70666583).

1421020201 is a wasteful number, since it uses less digits than its factorization.

1421020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370151.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1421020201 is about 37696.4215940983. The cubic root of 1421020201 is about 1124.2599777829.

Adding to 1421020201 its reverse (1020201241), we get a palindrome (2441221442).

The spelling of 1421020201 in words is "one billion, four hundred twenty-one million, twenty thousand, two hundred one".