1102220002021 has 4 divisors (see below), whose sum is σ = 1120289182444. Its totient is φ = 1084150821600.

The previous prime is 1102220001989. The next prime is 1102220002031. The reversal of 1102220002021 is 1202000222011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94073477796 + 1008146524225 = 306714^2 + 1004065^2 .

It is a cyclic number.

It is not a de Polignac number, because 1102220002021 - 2⁵ = 1102220001989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1102220001992 and 1102220002010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102220002031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9034590120 + ... + 9034590241.

It is an arithmetic number, because the mean of its divisors is an integer number (280072295611).

Almost surely, 2^{1102220002021} is an apocalyptic number.

It is an amenable number.

1102220002021 is a deficient number, since it is larger than the sum of its proper divisors (18069180423).

1102220002021 is an equidigital number, since it uses as much as digits as its factorization.

1102220002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18069180422.

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

Adding to 1102220002021 its reverse (1202000222011), we get a palindrome (2304220224032).

The spelling of 1102220002021 in words is "one trillion, one hundred two billion, two hundred twenty million, two thousand, twenty-one".