1100212202221 has 8 divisors (see below), whose sum is σ = 1212114974688. Its totient is φ = 990290010000.

The previous prime is 1100212202203. The next prime is 1100212202233. The reversal of 1100212202221 is 1222022120011.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1100212202221 - 2¹⁹ = 1100211677933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100212202195 and 1100212202204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100212202251) 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, 495143895 + ... + 495146116.

It is an arithmetic number, because the mean of its divisors is an integer number (151514371836).

Almost surely, 2^{1100212202221} is an apocalyptic number.

1100212202221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1100212202221 is a deficient number, since it is larger than the sum of its proper divisors (111902772467).

1100212202221 is a wasteful number, since it uses less digits than its factorization.

1100212202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990290123.

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

Adding to 1100212202221 its reverse (1222022120011), we get a palindrome (2322234322232).

The spelling of 1100212202221 in words is "one trillion, one hundred billion, two hundred twelve million, two hundred two thousand, two hundred twenty-one".