20114512121505 has 8 divisors (see below), whose sum is σ = 32183219394432. Its totient is φ = 10727739798128.

The previous prime is 20114512121489. The next prime is 20114512121507. The reversal of 20114512121505 is 50512121541102.

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

It is a cyclic number.

It is not a de Polignac number, because 20114512121505 - 2⁴ = 20114512121489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20114512121507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670483737369 + ... + 670483737398.

It is an arithmetic number, because the mean of its divisors is an integer number (4022902424304).

Almost surely, 2^{20114512121505} is an apocalyptic number.

It is an amenable number.

20114512121505 is a deficient number, since it is larger than the sum of its proper divisors (12068707272927).

20114512121505 is a wasteful number, since it uses less digits than its factorization.

20114512121505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340967474775.

The product of its (nonzero) digits is 4000, while the sum is 30.

Adding to 20114512121505 its reverse (50512121541102), we get a palindrome (70626633662607).

The spelling of 20114512121505 in words is "twenty trillion, one hundred fourteen billion, five hundred twelve million, one hundred twenty-one thousand, five hundred five".