1100220202021 has 8 divisors (see below), whose sum is σ = 1165004991000. Its totient is φ = 1035442741248.

The previous prime is 1100220201943. The next prime is 1100220202033. The reversal of 1100220202021 is 1202020220011.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 187411933921 + 912808268100 = 432911^2 + 955410^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1100220202021 - 2⁷ = 1100220201893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100220201992 and 1100220202010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100220202051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1521436 + ... + 2124901.

It is an arithmetic number, because the mean of its divisors is an integer number (145625623875).

Almost surely, 2^{1100220202021} is an apocalyptic number.

It is an amenable number.

1100220202021 is a deficient number, since it is larger than the sum of its proper divisors (64784788979).

1100220202021 is a wasteful number, since it uses less digits than its factorization.

1100220202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664103.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1100220202021 its reverse (1202020220011), we get a palindrome (2302240422032).

The spelling of 1100220202021 in words is "one trillion, one hundred billion, two hundred twenty million, two hundred two thousand, twenty-one".