1321212371 has 2 divisors, whose sum is σ = 1321212372. Its totient is φ = 1321212370.

The previous prime is 1321212349. The next prime is 1321212383. The reversal of 1321212371 is 1732121231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1321212371 - 2¹⁸ = 1320950227 is a prime.

It is a super-3 number, since 3×1321212371³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1321272371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660606185 + 660606186.

It is an arithmetic number, because the mean of its divisors is an integer number (660606186).

Almost surely, 2^1321212371 is an apocalyptic number.

1321212371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321212371 is an equidigital number, since it uses as much as digits as its factorization.

1321212371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 23.

The square root of 1321212371 is about 36348.4851266184. The cubic root of 1321212371 is about 1097.2970471347.

The spelling of 1321212371 in words is "one billion, three hundred twenty-one million, two hundred twelve thousand, three hundred seventy-one".