1102021202221 has 4 divisors (see below), whose sum is σ = 1105350571744. Its totient is φ = 1098691832700.

The previous prime is 1102021202213. The next prime is 1102021202237. The reversal of 1102021202221 is 1222021202011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1102021202221 - 2³ = 1102021202213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1102021202195 and 1102021202204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102031202221) 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, 1664684265 + ... + 1664684926.

It is an arithmetic number, because the mean of its divisors is an integer number (276337642936).

Almost surely, 2^{1102021202221} is an apocalyptic number.

It is an amenable number.

1102021202221 is a deficient number, since it is larger than the sum of its proper divisors (3329369523).

1102021202221 is an equidigital number, since it uses as much as digits as its factorization.

1102021202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3329369522.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1102021202221 its reverse (1222021202011), we get a palindrome (2324042404232).

The spelling of 1102021202221 in words is "one trillion, one hundred two billion, twenty-one million, two hundred two thousand, two hundred twenty-one".