3147111020021 has 4 divisors (see below), whose sum is σ = 3147183874272. Its totient is φ = 3147038165772.

The previous prime is 3147111019991. The next prime is 3147111020059. The reversal of 3147111020021 is 1200201117413.

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 3147111020021 - 2¹⁴ = 3147111003637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3147111070021) 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, 36362291 + ... + 36448736.

It is an arithmetic number, because the mean of its divisors is an integer number (786795968568).

Almost surely, 2^{3147111020021} is an apocalyptic number.

It is an amenable number.

3147111020021 is a deficient number, since it is larger than the sum of its proper divisors (72854251).

3147111020021 is an equidigital number, since it uses as much as digits as its factorization.

3147111020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72854250.

The product of its (nonzero) digits is 336, while the sum is 23.

Adding to 3147111020021 its reverse (1200201117413), we get a palindrome (4347312137434).

The spelling of 3147111020021 in words is "three trillion, one hundred forty-seven billion, one hundred eleven million, twenty thousand, twenty-one".