21202123414037 has 2 divisors, whose sum is σ = 21202123414038. Its totient is φ = 21202123414036.

The previous prime is 21202123414001. The next prime is 21202123414103. The reversal of 21202123414037 is 73041432120212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12411853118116 + 8790270295921 = 3523046^2 + 2964839^2 .

It is a cyclic number.

It is not a de Polignac number, because 21202123414037 - 2⁶ = 21202123413973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21202123413994 and 21202123414012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21202123414937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601061707018 + 10601061707019.

It is an arithmetic number, because the mean of its divisors is an integer number (10601061707019).

Almost surely, 2^{21202123414037} is an apocalyptic number.

It is an amenable number.

21202123414037 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202123414037 is an equidigital number, since it uses as much as digits as its factorization.

21202123414037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

Adding to 21202123414037 its reverse (73041432120212), we get a palindrome (94243555534249).

The spelling of 21202123414037 in words is "twenty-one trillion, two hundred two billion, one hundred twenty-three million, four hundred fourteen thousand, thirty-seven".