312022021 has 8 divisors (see below), whose sum is σ = 316401984. Its totient is φ = 307672800.

The previous prime is 312022003. The next prime is 312022033. The reversal of 312022021 is 120220213.

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 312022021 - 2¹¹ = 312019973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312021992 and 312022010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312022001) 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, 13146 + ... + 28228.

It is an arithmetic number, because the mean of its divisors is an integer number (39550248).

Almost surely, 2^312022021 is an apocalyptic number.

It is an amenable number.

312022021 is a deficient number, since it is larger than the sum of its proper divisors (4379963).

312022021 is a wasteful number, since it uses less digits than its factorization.

312022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15371.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 312022021 is about 17664.1450684713. The cubic root of 312022021 is about 678.2582450367.

Adding to 312022021 its reverse (120220213), we get a palindrome (432242234).

It can be divided in two parts, 3 and 12022021, that multiplied together give a palindrome (36066063).

The spelling of 312022021 in words is "three hundred twelve million, twenty-two thousand, twenty-one".