21202000112101 has 2 divisors, whose sum is σ = 21202000112102. Its totient is φ = 21202000112100.

The previous prime is 21202000112081. The next prime is 21202000112131. The reversal of 21202000112101 is 10121100020212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19142803812001 + 2059196300100 = 4375249^2 + 1434990^2 .

It is a cyclic number.

It is not a de Polignac number, because 21202000112101 - 2²⁵ = 21201966557669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21202000112131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601000056050 + 10601000056051.

It is an arithmetic number, because the mean of its divisors is an integer number (10601000056051).

Almost surely, 2^{21202000112101} is an apocalyptic number.

It is an amenable number.

21202000112101 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202000112101 is an equidigital number, since it uses as much as digits as its factorization.

21202000112101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21202000112101 its reverse (10121100020212), we get a palindrome (31323100132313).

The spelling of 21202000112101 in words is "twenty-one trillion, two hundred two billion, one hundred twelve thousand, one hundred one".