14201521020 has 120 divisors (see below), whose sum is σ = 45281351808. Its totient is φ = 3724963200.

The previous prime is 14201521003. The next prime is 14201521021. The reversal of 14201521020 is 2012510241.

14201521020 is a `hidden beast` number, since 1 + 420 + 15 + 210 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 14201520984 and 14201521002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14201521021) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 26965 + ... + 170675.

Almost surely, 2^14201521020 is an apocalyptic number.

14201521020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14201521020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22640675904).

14201521020 is an abundant number, since it is smaller than the sum of its proper divisors (31079830788).

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

14201521020 is a wasteful number, since it uses less digits than its factorization.

14201521020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143793 (or 143782 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The spelling of 14201521020 in words is "fourteen billion, two hundred one million, five hundred twenty-one thousand, twenty".