1100220002021 has 12 divisors (see below), whose sum is σ = 1297379922732. Its totient is φ = 930127278528.

The previous prime is 1100220001987. The next prime is 1100220002041. The reversal of 1100220002021 is 1202000220011.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 487044868996 + 613175133025 = 697886^2 + 783055^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1100220002021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100220001993 and 1100220002011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100220002041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153787310 + ... + 153794463.

It is an arithmetic number, because the mean of its divisors is an integer number (108114993561).

Almost surely, 2^{1100220002021} is an apocalyptic number.

It is an amenable number.

1100220002021 is a deficient number, since it is larger than the sum of its proper divisors (197159920711).

1100220002021 is an equidigital number, since it uses as much as digits as its factorization.

1100220002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307581860 (or 307581853 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1100220002021 its reverse (1202000220011), we get a palindrome (2302220222032).

The spelling of 1100220002021 in words is "one trillion, one hundred billion, two hundred twenty million, two thousand, twenty-one".