20000001311021 has 4 divisors (see below), whose sum is σ = 20186917211232. Its totient is φ = 19813085410812.

The previous prime is 20000001310997. The next prime is 20000001311047. The reversal of 20000001311021 is 12011310000002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20000001311021 - 2³⁴ = 19982821441837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000001310993 and 20000001311011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000001311921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93457949945 + ... + 93457950158.

It is an arithmetic number, because the mean of its divisors is an integer number (5046729302808).

Almost surely, 2^{20000001311021} is an apocalyptic number.

It is an amenable number.

20000001311021 is a deficient number, since it is larger than the sum of its proper divisors (186915900211).

20000001311021 is a wasteful number, since it uses less digits than its factorization.

20000001311021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186915900210.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20000001311021 its reverse (12011310000002), we get a palindrome (32011311311023).

The spelling of 20000001311021 in words is "twenty trillion, one million, three hundred eleven thousand, twenty-one".