11103221121031 has 4 divisors (see below), whose sum is σ = 11957315053432. Its totient is φ = 10249127188632.

The previous prime is 11103221121023. The next prime is 11103221121073. The reversal of 11103221121031 is 13012112230111.

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

It is a cyclic number.

It is not a de Polignac number, because 11103221121031 - 2³ = 11103221121023 is a prime.

It is a super-2 number, since 2×11103221121031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11103221121731) 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, 427046966181 + ... + 427046966206.

It is an arithmetic number, because the mean of its divisors is an integer number (2989328763358).

Almost surely, 2^{11103221121031} is an apocalyptic number.

11103221121031 is a deficient number, since it is larger than the sum of its proper divisors (854093932401).

11103221121031 is an equidigital number, since it uses as much as digits as its factorization.

11103221121031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854093932400.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 11103221121031 its reverse (13012112230111), we get a palindrome (24115333351142).

The spelling of 11103221121031 in words is "eleven trillion, one hundred three billion, two hundred twenty-one million, one hundred twenty-one thousand, thirty-one".