10131122221 has 8 divisors (see below), whose sum is σ = 11633824800. Its totient is φ = 8725368240.

The previous prime is 10131122203. The next prime is 10131122249. The reversal of 10131122221 is 12222113101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10131122221 - 2¹⁷ = 10130991149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10131122195 and 10131122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10131122201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24236926 + ... + 24237343.

It is an arithmetic number, because the mean of its divisors is an integer number (1454228100).

Almost surely, 2^10131122221 is an apocalyptic number.

10131122221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10131122221 is a deficient number, since it is larger than the sum of its proper divisors (1502702579).

10131122221 is a wasteful number, since it uses less digits than its factorization.

10131122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48474299.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 10131122221 its reverse (12222113101), we get a palindrome (22353235322).

The spelling of 10131122221 in words is "ten billion, one hundred thirty-one million, one hundred twenty-two thousand, two hundred twenty-one".