20001514021 has 8 divisors (see below), whose sum is σ = 20400700824. Its totient is φ = 19603134720.

The previous prime is 20001514007. The next prime is 20001514031. The reversal of 20001514021 is 12041510002.

It can be written as a sum of positive squares in 4 ways, for example, as 3039316900 + 16962197121 = 55130^2 + 130239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20001514021 - 2⁹ = 20001513509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20001513986 and 20001514004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001514031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151720 + ... + 251041.

It is an arithmetic number, because the mean of its divisors is an integer number (2550087603).

Almost surely, 2^20001514021 is an apocalyptic number.

It is an amenable number.

20001514021 is a deficient number, since it is larger than the sum of its proper divisors (399186803).

20001514021 is an equidigital number, since it uses as much as digits as its factorization.

20001514021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403751.

The product of its (nonzero) digits is 80, while the sum is 16.

The spelling of 20001514021 in words is "twenty billion, one million, five hundred fourteen thousand, twenty-one".