10131121123121 has 16 divisors (see below), whose sum is σ = 10214204457600. Its totient is φ = 10048389452928.

The previous prime is 10131121123051. The next prime is 10131121123169. The reversal of 10131121123121 is 12132112113101.

10131121123121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10131121123121 - 2²² = 10131116928817 is a prime.

It is a super-2 number, since 2×10131121123121² (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 = 10131121123093 and 10131121123102.

It is not an unprimeable number, because it can be changed into a prime (10131121323121) 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, 503850350 + ... + 503870456.

It is an arithmetic number, because the mean of its divisors is an integer number (638387778600).

Almost surely, 2^{10131121123121} is an apocalyptic number.

It is an amenable number.

10131121123121 is a deficient number, since it is larger than the sum of its proper divisors (83083334479).

10131121123121 is a wasteful number, since it uses less digits than its factorization.

10131121123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28648.

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

Adding to 10131121123121 its reverse (12132112113101), we get a palindrome (22263233236222).

The spelling of 10131121123121 in words is "ten trillion, one hundred thirty-one billion, one hundred twenty-one million, one hundred twenty-three thousand, one hundred twenty-one".