312212021203 has 2 divisors, whose sum is σ = 312212021204. Its totient is φ = 312212021202.

The previous prime is 312212021189. The next prime is 312212021237. The reversal of 312212021203 is 302120212213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312212021203 - 2⁹ = 312212020691 is a prime.

It is not a weakly prime, because it can be changed into another prime (312212021263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156106010601 + 156106010602.

It is an arithmetic number, because the mean of its divisors is an integer number (156106010602).

Almost surely, 2^312212021203 is an apocalyptic number.

312212021203 is a deficient number, since it is larger than the sum of its proper divisors (1).

312212021203 is an equidigital number, since it uses as much as digits as its factorization.

312212021203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 312212021203 its reverse (302120212213), we get a palindrome (614332233416).

The spelling of 312212021203 in words is "three hundred twelve billion, two hundred twelve million, twenty-one thousand, two hundred three".