1122200011221 has 32 divisors (see below), whose sum is σ = 1579997508096. Its totient is φ = 707538240000.

The previous prime is 1122200011199. The next prime is 1122200011279. The reversal of 1122200011221 is 1221100022211.

It is not a de Polignac number, because 1122200011221 - 2⁹ = 1122200010709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1122200011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122200011321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 778371 + ... + 1688271.

It is an arithmetic number, because the mean of its divisors is an integer number (49374922128).

Almost surely, 2^{1122200011221} is an apocalyptic number.

It is an amenable number.

1122200011221 is a deficient number, since it is larger than the sum of its proper divisors (457797496875).

1122200011221 is a wasteful number, since it uses less digits than its factorization.

1122200011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910253.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1122200011221 its reverse (1221100022211), we get a palindrome (2343300033432).

The spelling of 1122200011221 in words is "one trillion, one hundred twenty-two billion, two hundred million, eleven thousand, two hundred twenty-one".