1090220002 has 4 divisors (see below), whose sum is σ = 1635330006. Its totient is φ = 545110000.

The previous prime is 1090219973. The next prime is 1090220009. The reversal of 1090220002 is 2000220901.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1000520161 + 89699841 = 31631^2 + 9471^2 .

It is not an unprimeable number, because it can be changed into a prime (1090220009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272554999 + ... + 272555002.

Almost surely, 2^1090220002 is an apocalyptic number.

1090220002 is a deficient number, since it is larger than the sum of its proper divisors (545110004).

1090220002 is an equidigital number, since it uses as much as digits as its factorization.

1090220002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545110003.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1090220002 is about 33018.4797045533. The cubic root of 1090220002 is about 1029.2117014858.

Adding to 1090220002 its reverse (2000220901), we get a palindrome (3090440903).

The spelling of 1090220002 in words is "one billion, ninety million, two hundred twenty thousand, two".