10242111120121 has 4 divisors (see below), whose sum is σ = 10844588244852. Its totient is φ = 9639633995392.

The previous prime is 10242111120113. The next prime is 10242111120173. The reversal of 10242111120121 is 12102111124201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4013912075625 + 6228199044496 = 2003475^2 + 2495636^2 .

It is a cyclic number.

It is not a de Polignac number, because 10242111120121 - 2³ = 10242111120113 is a prime.

It is a super-4 number, since 4×10242111120121⁴ (a number of 53 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10242111120221) 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, 301238562340 + ... + 301238562373.

It is an arithmetic number, because the mean of its divisors is an integer number (2711147061213).

Almost surely, 2^{10242111120121} is an apocalyptic number.

It is an amenable number.

10242111120121 is a deficient number, since it is larger than the sum of its proper divisors (602477124731).

10242111120121 is an equidigital number, since it uses as much as digits as its factorization.

10242111120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602477124730.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 10242111120121 its reverse (12102111124201), we get a palindrome (22344222244322).

The spelling of 10242111120121 in words is "ten trillion, two hundred forty-two billion, one hundred eleven million, one hundred twenty thousand, one hundred twenty-one".