20342514121 has 16 divisors (see below), whose sum is σ = 21231978768. Its totient is φ = 19474560000.

The previous prime is 20342514119. The next prime is 20342514163. The reversal of 20342514121 is 12141524302.

It can be written as a sum of positive squares in 8 ways, for example, as 238393600 + 20104120521 = 15440^2 + 141789^2 .

It is a cyclic number.

It is not a de Polignac number, because 20342514121 - 2¹ = 20342514119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20342514421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 572371 + ... + 606871.

It is an arithmetic number, because the mean of its divisors is an integer number (1326998673).

Almost surely, 2^20342514121 is an apocalyptic number.

It is an amenable number.

20342514121 is a deficient number, since it is larger than the sum of its proper divisors (889464647).

20342514121 is a wasteful number, since it uses less digits than its factorization.

20342514121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34812.

The product of its (nonzero) digits is 1920, while the sum is 25.

The spelling of 20342514121 in words is "twenty billion, three hundred forty-two million, five hundred fourteen thousand, one hundred twenty-one".