312222210001 has 8 divisors (see below), whose sum is σ = 356018085864. Its totient is φ = 271251874560.

The previous prime is 312222209993. The next prime is 312222210011. The reversal of 312222210001 is 100012222213.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 215062225 + 312007147776 = 14665^2 + 558576^2 .

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 312222210001 - 2³ = 312222209993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312222210011) 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, 706384870 + ... + 706385311.

It is an arithmetic number, because the mean of its divisors is an integer number (44502260733).

Almost surely, 2^312222210001 is an apocalyptic number.

It is an amenable number.

312222210001 is a deficient number, since it is larger than the sum of its proper divisors (43795875863).

312222210001 is a wasteful number, since it uses less digits than its factorization.

312222210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412770211.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 312222210001 its reverse (100012222213), we get a palindrome (412234432214).

The spelling of 312222210001 in words is "three hundred twelve billion, two hundred twenty-two million, two hundred ten thousand, one".