20010132281 has 2 divisors, whose sum is σ = 20010132282. Its totient is φ = 20010132280.

The previous prime is 20010132229. The next prime is 20010132323. The reversal of 20010132281 is 18223101002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11297776681 + 8712355600 = 106291^2 + 93340^2 .

It is a cyclic number.

It is not a de Polignac number, because 20010132281 - 2²⁶ = 19943023417 is a prime.

It is a super-2 number, since 2×20010132281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20010132581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005066140 + 10005066141.

It is an arithmetic number, because the mean of its divisors is an integer number (10005066141).

Almost surely, 2^20010132281 is an apocalyptic number.

It is an amenable number.

20010132281 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010132281 is an equidigital number, since it uses as much as digits as its factorization.

20010132281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 20010132281 its reverse (18223101002), we get a palindrome (38233233283).

The spelling of 20010132281 in words is "twenty billion, ten million, one hundred thirty-two thousand, two hundred eighty-one".