222020001 has 16 divisors (see below), whose sum is σ = 375907200.
Its totient is φ = 126868464.
The previous prime is 222019999. The next prime is 222020011. The reversal of 222020001 is 100020222.
Adding to 222020001 its reverse (100020222), we get a palindrome (322040223).
222020001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 222020001 - 21 = 222019999 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 (222020011) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 587166 + ... + 587543.
It is an arithmetic number, because the mean of its divisors is an integer number (23494200).
Almost surely, 2222020001 is an apocalyptic number.
222020001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.
It is an amenable number.
222020001 is a deficient number, since it is larger than the sum of its proper divisors (153887199).
222020001 is a wasteful number, since it uses less digits than its factorization.
222020001 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1174725 (or 1174719 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 9.
The square root of 222020001 is about 14900.3356002474.
The cubic root of 222020001 is about 605.5230783444.
The spelling of 222020001 in words is "two hundred twenty-two million, twenty thousand, one".