1022221001 has 8 divisors (see below), whose sum is σ = 1077648384. Its totient is φ = 968196960.

The previous prime is 1022220977. The next prime is 1022221049. The reversal of 1022221001 is 1001222201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1022221001 - 2¹⁸ = 1021958857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1022221051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349340 + ... + 352253.

It is an arithmetic number, because the mean of its divisors is an integer number (134706048).

Almost surely, 2^1022221001 is an apocalyptic number.

It is an amenable number.

1022221001 is a deficient number, since it is larger than the sum of its proper divisors (55427383).

1022221001 is an equidigital number, since it uses as much as digits as its factorization.

1022221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701671.

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

The square root of 1022221001 is about 31972.1910572297. The cubic root of 1022221001 is about 1007.3528040986.

Adding to 1022221001 its reverse (1001222201), we get a palindrome (2023443202).

The spelling of 1022221001 in words is "one billion, twenty-two million, two hundred twenty-one thousand, one".