1133100012221 has 4 divisors (see below), whose sum is σ = 1133111176092. Its totient is φ = 1133088848352.

The previous prime is 1133100012203. The next prime is 1133100012223. The reversal of 1133100012221 is 1222100013311.

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 733182900121 + 399917112100 = 856261^2 + 632390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1133100012221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1133100012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133100012223) 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, 5428280 + ... + 5633153.

It is an arithmetic number, because the mean of its divisors is an integer number (283277794023).

Almost surely, 2^{1133100012221} is an apocalyptic number.

It is an amenable number.

1133100012221 is a deficient number, since it is larger than the sum of its proper divisors (11163871).

1133100012221 is a wasteful number, since it uses less digits than its factorization.

1133100012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11163870.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1133100012221 its reverse (1222100013311), we get a palindrome (2355200025532).

The spelling of 1133100012221 in words is "one trillion, one hundred thirty-three billion, one hundred million, twelve thousand, two hundred twenty-one".