20011332701 has 2 divisors, whose sum is σ = 20011332702. Its totient is φ = 20011332700.

The previous prime is 20011332683. The next prime is 20011332713. The reversal of 20011332701 is 10723311002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10655607076 + 9355725625 = 103226^2 + 96725^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011332701 - 2¹⁴ = 20011316317 is a prime.

It is a super-2 number, since 2×20011332701² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20011332751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005666350 + 10005666351.

It is an arithmetic number, because the mean of its divisors is an integer number (10005666351).

Almost surely, 2^20011332701 is an apocalyptic number.

It is an amenable number.

20011332701 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011332701 is an equidigital number, since it uses as much as digits as its factorization.

20011332701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

Adding to 20011332701 its reverse (10723311002), we get a palindrome (30734643703).

The spelling of 20011332701 in words is "twenty billion, eleven million, three hundred thirty-two thousand, seven hundred one".