4015121015121 has 8 divisors (see below), whose sum is σ = 5367472481280. Its totient is φ = 2669758446192.

The previous prime is 4015121015107. The next prime is 4015121015149. The reversal of 4015121015121 is 1215101215104.

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

It is not a de Polignac number, because 4015121015121 - 2¹³ = 4015121006929 is a prime.

It is a super-2 number, since 2×4015121015121² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4015121015091 and 4015121015100.

It is not an unprimeable number, because it can be changed into a prime (4015121017121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1747222966 + ... + 1747225263.

It is an arithmetic number, because the mean of its divisors is an integer number (670934060160).

Almost surely, 2^{4015121015121} is an apocalyptic number.

It is an amenable number.

4015121015121 is a deficient number, since it is larger than the sum of its proper divisors (1352351466159).

4015121015121 is a wasteful number, since it uses less digits than its factorization.

4015121015121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494448615.

The product of its (nonzero) digits is 400, while the sum is 24.

The spelling of 4015121015121 in words is "four trillion, fifteen billion, one hundred twenty-one million, fifteen thousand, one hundred twenty-one".