1001220022 has 16 divisors (see below), whose sum is σ = 1640696400. Its totient is φ = 454451040.

The previous prime is 1001220019. The next prime is 1001220043. The reversal of 1001220022 is 2200221001.

It is a junction number, because it is equal to n+sod(n) for n = 1001219990 and 1001220008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16497 + ... + 47692.

It is an arithmetic number, because the mean of its divisors is an integer number (102543525).

Almost surely, 2^1001220022 is an apocalyptic number.

1001220022 is a deficient number, since it is larger than the sum of its proper divisors (639476378).

1001220022 is a wasteful number, since it uses less digits than its factorization.

1001220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64911.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1001220022 is about 31642.0609632179. The cubic root of 1001220022 is about 1000.4065087283.

Adding to 1001220022 its reverse (2200221001), we get a palindrome (3201441023).

It can be divided in two parts, 1001 and 220022, that multiplied together give a palindrome (220242022).

The spelling of 1001220022 in words is "one billion, one million, two hundred twenty thousand, twenty-two".