2021021320031 has 8 divisors (see below), whose sum is σ = 2312000891424. Its totient is φ = 1730607308640.

The previous prime is 2021021319949. The next prime is 2021021320051. The reversal of 2021021320031 is 1300231201202.

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

It is not a de Polignac number, because 2021021320031 - 2²² = 2021017125727 is a prime.

It is a super-2 number, since 2×2021021320031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021021319991 and 2021021320009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021021320051) 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, 141382340 + ... + 141396633.

It is an arithmetic number, because the mean of its divisors is an integer number (289000111428).

Almost surely, 2^{2021021320031} is an apocalyptic number.

2021021320031 is a deficient number, since it is larger than the sum of its proper divisors (290979571393).

2021021320031 is a wasteful number, since it uses less digits than its factorization.

2021021320031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282780001.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 2021021320031 its reverse (1300231201202), we get a palindrome (3321252521233).

The spelling of 2021021320031 in words is "two trillion, twenty-one billion, twenty-one million, three hundred twenty thousand, thirty-one".