20121344034 has 64 divisors (see below), whose sum is σ = 45618094080. Its totient is φ = 5861520000.

The previous prime is 20121344027. The next prime is 20121344063. The reversal of 20121344034 is 43044312102.

It is a junction number, because it is equal to n+sod(n) for n = 20121343995 and 20121344013.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 276382 + ... + 341510.

It is an arithmetic number, because the mean of its divisors is an integer number (712782720).

Almost surely, 2^20121344034 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20121344034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22809047040).

20121344034 is an abundant number, since it is smaller than the sum of its proper divisors (25496750046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20121344034 is a wasteful number, since it uses less digits than its factorization.

20121344034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65327.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20121344034 its reverse (43044312102), we get a palindrome (63165656136).

The spelling of 20121344034 in words is "twenty billion, one hundred twenty-one million, three hundred forty-four thousand, thirty-four".