121042450101 has 4 divisors (see below), whose sum is σ = 161389933472. Its totient is φ = 80694966732.

The previous prime is 121042450093. The next prime is 121042450117. The reversal of 121042450101 is 101054240121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101054240121 = 3 ⋅33684746707.

It is not a de Polignac number, because 121042450101 - 2³ = 121042450093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121042450141) 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, 20173741681 + ... + 20173741686.

It is an arithmetic number, because the mean of its divisors is an integer number (40347483368).

Almost surely, 2^121042450101 is an apocalyptic number.

It is an amenable number.

121042450101 is a deficient number, since it is larger than the sum of its proper divisors (40347483371).

121042450101 is an equidigital number, since it uses as much as digits as its factorization.

121042450101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40347483370.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 121042450101 its reverse (101054240121), we get a palindrome (222096690222).

The spelling of 121042450101 in words is "one hundred twenty-one billion, forty-two million, four hundred fifty thousand, one hundred one".