121510410001 has 4 divisors (see below), whose sum is σ = 121513288372. Its totient is φ = 121507531632.

The previous prime is 121510409981. The next prime is 121510410023. The reversal of 121510410001 is 100014015121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100014015121 = 151 ⋅662344471.

It can be written as a sum of positive squares in 2 ways, for example, as 104279909776 + 17230500225 = 322924^2 + 131265^2 .

It is a cyclic number.

It is not a de Polignac number, because 121510410001 - 2¹³ = 121510401809 is a prime.

It is a super-2 number, since 2×121510410001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121510420001) 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, 1374906 + ... + 1460611.

It is an arithmetic number, because the mean of its divisors is an integer number (30378322093).

Almost surely, 2^121510410001 is an apocalyptic number.

It is an amenable number.

121510410001 is a deficient number, since it is larger than the sum of its proper divisors (2878371).

121510410001 is an equidigital number, since it uses as much as digits as its factorization.

121510410001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878370.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 121510410001 its reverse (100014015121), we get a palindrome (221524425122).

The spelling of 121510410001 in words is "one hundred twenty-one billion, five hundred ten million, four hundred ten thousand, one".