11100121020031 has 4 divisors (see below), whose sum is σ = 11458189440064. Its totient is φ = 10742052600000.

The previous prime is 11100121020019. The next prime is 11100121020041. The reversal of 11100121020031 is 13002012100111.

It is a happy number.

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 11100121020031 - 2¹⁷ = 11100120888959 is a prime.

It is a super-2 number, since 2×11100121020031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11100121019993 and 11100121020020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100121020041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179034209970 + ... + 179034210031.

It is an arithmetic number, because the mean of its divisors is an integer number (2864547360016).

Almost surely, 2^{11100121020031} is an apocalyptic number.

11100121020031 is a deficient number, since it is larger than the sum of its proper divisors (358068420033).

11100121020031 is an equidigital number, since it uses as much as digits as its factorization.

11100121020031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358068420032.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11100121020031 its reverse (13002012100111), we get a palindrome (24102133120142).

The spelling of 11100121020031 in words is "eleven trillion, one hundred billion, one hundred twenty-one million, twenty thousand, thirty-one".