1101221133331 has 4 divisors (see below), whose sum is σ = 1201332145464. Its totient is φ = 1001110121200.

The previous prime is 1101221133269. The next prime is 1101221133347. The reversal of 1101221133331 is 1333311221011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101221133331 is a prime.

It is a super-2 number, since 2×1101221133331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1101221133371) 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, 50055506050 + ... + 50055506071.

It is an arithmetic number, because the mean of its divisors is an integer number (300333036366).

Almost surely, 2^{1101221133331} is an apocalyptic number.

1101221133331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1101221133331 is a deficient number, since it is larger than the sum of its proper divisors (100111012133).

1101221133331 is a wasteful number, since it uses less digits than its factorization.

1101221133331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100111012132.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1101221133331 its reverse (1333311221011), we get a palindrome (2434532354342).

The spelling of 1101221133331 in words is "one trillion, one hundred one billion, two hundred twenty-one million, one hundred thirty-three thousand, three hundred thirty-one".