20201421154152 has 128 divisors (see below), whose sum is σ = 57973017772800. Its totient is φ = 5746373419008.

The previous prime is 20201421154121. The next prime is 20201421154163. The reversal of 20201421154152 is 25145112410202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 388634788 + ... + 388686764.

It is an arithmetic number, because the mean of its divisors is an integer number (452914201350).

Almost surely, 2^{20201421154152} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20201421154152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28986508886400).

20201421154152 is an abundant number, since it is smaller than the sum of its proper divisors (37771596618648).

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

20201421154152 is a wasteful number, since it uses less digits than its factorization.

20201421154152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62155 (or 62151 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

Adding to 20201421154152 its reverse (25145112410202), we get a palindrome (45346533564354).

The spelling of 20201421154152 in words is "twenty trillion, two hundred one billion, four hundred twenty-one million, one hundred fifty-four thousand, one hundred fifty-two".