21312222032701 has 2 divisors, whose sum is σ = 21312222032702. Its totient is φ = 21312222032700.

The previous prime is 21312222032659. The next prime is 21312222032711. The reversal of 21312222032701 is 10723022221312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18604979595801 + 2707242436900 = 4313349^2 + 1645370^2 .

It is a cyclic number.

It is not a de Polignac number, because 21312222032701 - 2¹¹ = 21312222030653 is a prime.

It is a super-2 number, since 2×21312222032701² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21312222032701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21312222032711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10656111016350 + 10656111016351.

It is an arithmetic number, because the mean of its divisors is an integer number (10656111016351).

Almost surely, 2^{21312222032701} is an apocalyptic number.

It is an amenable number.

21312222032701 is a deficient number, since it is larger than the sum of its proper divisors (1).

21312222032701 is an equidigital number, since it uses as much as digits as its factorization.

21312222032701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The spelling of 21312222032701 in words is "twenty-one trillion, three hundred twelve billion, two hundred twenty-two million, thirty-two thousand, seven hundred one".