21132051041 has 2 divisors, whose sum is σ = 21132051042. Its totient is φ = 21132051040.

The previous prime is 21132051037. The next prime is 21132051089. The reversal of 21132051041 is 14015023112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15183168400 + 5948882641 = 123220^2 + 77129^2 .

It is a cyclic number.

It is not a de Polignac number, because 21132051041 - 2² = 21132051037 is a prime.

It is not a weakly prime, because it can be changed into another prime (21132051091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566025520 + 10566025521.

It is an arithmetic number, because the mean of its divisors is an integer number (10566025521).

Almost surely, 2^21132051041 is an apocalyptic number.

It is an amenable number.

21132051041 is a deficient number, since it is larger than the sum of its proper divisors (1).

21132051041 is an equidigital number, since it uses as much as digits as its factorization.

21132051041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 21132051041 its reverse (14015023112), we get a palindrome (35147074153).

The spelling of 21132051041 in words is "twenty-one billion, one hundred thirty-two million, fifty-one thousand, forty-one".