20000311021 has 8 divisors (see below), whose sum is σ = 20048543424. Its totient is φ = 19952110080.

The previous prime is 20000311003. The next prime is 20000311033. The reversal of 20000311021 is 12011300002.

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 20000311021 - 2⁷ = 20000310893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20000310989 and 20000311007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000311061) 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, 1691496 + ... + 1703278.

It is an arithmetic number, because the mean of its divisors is an integer number (2506067928).

Almost surely, 2^20000311021 is an apocalyptic number.

It is an amenable number.

20000311021 is a deficient number, since it is larger than the sum of its proper divisors (48232403).

20000311021 is a wasteful number, since it uses less digits than its factorization.

20000311021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15731.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20000311021 its reverse (12011300002), we get a palindrome (32011611023).

The spelling of 20000311021 in words is "twenty billion, three hundred eleven thousand, twenty-one".