1000220101 has 4 divisors (see below), whose sum is σ = 1001552704. Its totient is φ = 998887500.

The previous prime is 1000220093. The next prime is 1000220107. The reversal of 1000220101 is 1010220001.

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 1000220101 - 2³ = 1000220093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000220107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665175 + ... + 666676.

It is an arithmetic number, because the mean of its divisors is an integer number (250388176).

Almost surely, 2^1000220101 is an apocalyptic number.

It is an amenable number.

1000220101 is a deficient number, since it is larger than the sum of its proper divisors (1332603).

1000220101 is an equidigital number, since it uses as much as digits as its factorization.

1000220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332602.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1000220101 is about 31626.2565125878. The cubic root of 1000220101 is about 1000.0733616179.

Adding to 1000220101 its reverse (1010220001), we get a palindrome (2010440102).

It can be divided in two parts, 10002 and 20101, that added together give a palindrome (30103).

The spelling of 1000220101 in words is "one billion, two hundred twenty thousand, one hundred one".