110131231121021 has 16 divisors (see below), whose sum is σ = 121594755702528. Its totient is φ = 98913920952000.

The previous prime is 110131231121003. The next prime is 110131231121027. The reversal of 110131231121021 is 120121132131011.

It is a de Polignac number, because none of the positive numbers 2^k-110131231121021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110131231120984 and 110131231121002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110131231121027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106535306 + ... + 107564091.

It is an arithmetic number, because the mean of its divisors is an integer number (7599672231408).

Almost surely, 2^{110131231121021} is an apocalyptic number.

110131231121021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

110131231121021 is a deficient number, since it is larger than the sum of its proper divisors (11463524581507).

110131231121021 is a wasteful number, since it uses less digits than its factorization.

110131231121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214099972.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 110131231121021 its reverse (120121132131011), we get a palindrome (230252363252032).

The spelling of 110131231121021 in words is "one hundred ten trillion, one hundred thirty-one billion, two hundred thirty-one million, one hundred twenty-one thousand, twenty-one".