21200158801 has 2 divisors, whose sum is σ = 21200158802. Its totient is φ = 21200158800.

The previous prime is 21200158787. The next prime is 21200158891. The reversal of 21200158801 is 10885100212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12565289025 + 8634869776 = 112095^2 + 92924^2 .

It is a cyclic number.

It is not a de Polignac number, because 21200158801 - 2¹⁷ = 21200027729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21200158801.

It is not a weakly prime, because it can be changed into another prime (21200158891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600079400 + 10600079401.

It is an arithmetic number, because the mean of its divisors is an integer number (10600079401).

Almost surely, 2^21200158801 is an apocalyptic number.

It is an amenable number.

21200158801 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200158801 is an equidigital number, since it uses as much as digits as its factorization.

21200158801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 28.

The spelling of 21200158801 in words is "twenty-one billion, two hundred million, one hundred fifty-eight thousand, eight hundred one".