1011220002 has 48 divisors (see below), whose sum is σ = 2362317048. Its totient is φ = 310775040.

The previous prime is 1011219991. The next prime is 1011220013. The reversal of 1011220002 is 2000221101.

It is an interprime number because it is at equal distance from previous prime (1011219991) and next prime (1011220013).

It can be written as a sum of positive squares in 4 ways, for example, as 558424161 + 452795841 = 23631^2 + 21279^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 246238 + ... + 250310.

Almost surely, 2^1011220002 is an apocalyptic number.

1011220002 is an abundant number, since it is smaller than the sum of its proper divisors (1351097046).

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

1011220002 is a wasteful number, since it uses less digits than its factorization.

1011220002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5155 (or 5152 counting only the distinct ones).

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

The square root of 1011220002 is about 31799.6855644832. The cubic root of 1011220002 is about 1003.7260996042.

Adding to 1011220002 its reverse (2000221101), we get a palindrome (3011441103).

The spelling of 1011220002 in words is "one billion, eleven million, two hundred twenty thousand, two".