1011220104 has 16 divisors (see below), whose sum is σ = 2528050320. Its totient is φ = 337073360.

The previous prime is 1011220097. The next prime is 1011220123. The reversal of 1011220104 is 4010221101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1011220104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21067062 + ... + 21067109.

It is an arithmetic number, because the mean of its divisors is an integer number (158003145).

Almost surely, 2^1011220104 is an apocalyptic number.

It is an amenable number.

1011220104 is an abundant number, since it is smaller than the sum of its proper divisors (1516830216).

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

1011220104 is a wasteful number, since it uses less digits than its factorization.

1011220104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42134180 (or 42134176 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1011220104 is about 31799.6871682726. The cubic root of 1011220104 is about 1003.7261333523.

Adding to 1011220104 its reverse (4010221101), we get a palindrome (5021441205).

The spelling of 1011220104 in words is "one billion, eleven million, two hundred twenty thousand, one hundred four".