1000221102 has 32 divisors (see below), whose sum is σ = 2319356160. Its totient is φ = 318910680.

The previous prime is 1000221083. The next prime is 1000221109. The reversal of 1000221102 is 2011220001.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000221109) 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, 401424 + ... + 403907.

It is an arithmetic number, because the mean of its divisors is an integer number (72479880).

Almost surely, 2^1000221102 is an apocalyptic number.

1000221102 is an abundant number, since it is smaller than the sum of its proper divisors (1319135058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000221102 is a wasteful number, since it uses less digits than its factorization.

1000221102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805365 (or 805359 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1000221102 is about 31626.2723380420. The cubic root of 1000221102 is about 1000.0736952355.

Adding to 1000221102 its reverse (2011220001), we get a palindrome (3011441103).

It can be divided in two parts, 100022 and 1102, that added together give a square (101124 = 318²).

The spelling of 1000221102 in words is "one billion, two hundred twenty-one thousand, one hundred two".