20134121201 has 4 divisors (see below), whose sum is σ = 20267459904. Its totient is φ = 20000782500.

The previous prime is 20134121143. The next prime is 20134121213. The reversal of 20134121201 is 10212143102.

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.

It is a cyclic number.

It is not a de Polignac number, because 20134121201 - 2²² = 20129926897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20134121201.

It is not an unprimeable number, because it can be changed into a prime (20134121251) 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, 66669125 + ... + 66669426.

It is an arithmetic number, because the mean of its divisors is an integer number (5066864976).

Almost surely, 2^20134121201 is an apocalyptic number.

It is an amenable number.

20134121201 is a deficient number, since it is larger than the sum of its proper divisors (133338703).

20134121201 is a wasteful number, since it uses less digits than its factorization.

20134121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133338702.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20134121201 its reverse (10212143102), we get a palindrome (30346264303).

It can be divided in two parts, 2013 and 4121201, that added together give a palindrome (4123214).

The spelling of 20134121201 in words is "twenty billion, one hundred thirty-four million, one hundred twenty-one thousand, two hundred one".