1220111002 has 24 divisors (see below), whose sum is σ = 2040032736. Its totient is φ = 546777000.

The previous prime is 1220110999. The next prime is 1220111017. The reversal of 1220111002 is 2001110221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220111002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18324 + ... + 52687.

It is an arithmetic number, because the mean of its divisors is an integer number (85001364).

Almost surely, 2^1220111002 is an apocalyptic number.

1220111002 is a deficient number, since it is larger than the sum of its proper divisors (819921734).

1220111002 is a wasteful number, since it uses less digits than its factorization.

1220111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71106 (or 71095 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1220111002 is about 34930.0873460116. The cubic root of 1220111002 is about 1068.5621359795.

Adding to 1220111002 its reverse (2001110221), we get a palindrome (3221221223).

The spelling of 1220111002 in words is "one billion, two hundred twenty million, one hundred eleven thousand, two".