20022201 has 8 divisors (see below), whose sum is σ = 29662560. Its totient is φ = 13348116.

The previous prime is 20022199. The next prime is 20022203. The reversal of 20022201 is 10222002.

It is an interprime number because it is at equal distance from previous prime (20022199) and next prime (20022203).

It is not a de Polignac number, because 20022201 - 2¹ = 20022199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20022203) 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, 370755 + ... + 370808.

It is an arithmetic number, because the mean of its divisors is an integer number (3707820).

Almost surely, 2^20022201 is an apocalyptic number.

It is an amenable number.

20022201 is a deficient number, since it is larger than the sum of its proper divisors (9640359).

20022201 is an equidigital number, since it uses as much as digits as its factorization.

20022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741572 (or 741566 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 20022201 is about 4474.6174138132. The cubic root of 20022201 is about 271.5421624945.

Adding to 20022201 its reverse (10222002), we get a palindrome (30244203).

The spelling of 20022201 in words is "twenty million, twenty-two thousand, two hundred one".