20121301420 has 48 divisors (see below), whose sum is σ = 47685607200. Its totient is φ = 7064529920.

The previous prime is 20121301399. The next prime is 20121301427. The reversal of 20121301420 is 2410312102.

It is a junction number, because it is equal to n+sod(n) for n = 20121301394 and 20121301403.

It is not an unprimeable number, because it can be changed into a prime (20121301427) 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, 1570525 + ... + 1583284.

It is an arithmetic number, because the mean of its divisors is an integer number (993450150).

Almost surely, 2^20121301420 is an apocalyptic number.

20121301420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20121301420 is an abundant number, since it is smaller than the sum of its proper divisors (27564305780).

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

20121301420 is a wasteful number, since it uses less digits than its factorization.

20121301420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3153858 (or 3153856 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20121301420 its reverse (2410312102), we get a palindrome (22531613522).

The spelling of 20121301420 in words is "twenty billion, one hundred twenty-one million, three hundred one thousand, four hundred twenty".