21200212020037 has 2 divisors, whose sum is σ = 21200212020038. Its totient is φ = 21200212020036.

The previous prime is 21200212019999. The next prime is 21200212020041. The reversal of 21200212020037 is 73002021200212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21157479275076 + 42732744961 = 4599726^2 + 206719^2 .

It is a cyclic number.

It is not a de Polignac number, because 21200212020037 - 2¹¹ = 21200212017989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21200212020067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600106010018 + 10600106010019.

It is an arithmetic number, because the mean of its divisors is an integer number (10600106010019).

Almost surely, 2^{21200212020037} is an apocalyptic number.

It is an amenable number.

21200212020037 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200212020037 is an equidigital number, since it uses as much as digits as its factorization.

21200212020037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

Adding to 21200212020037 its reverse (73002021200212), we get a palindrome (94202233220249).

The spelling of 21200212020037 in words is "twenty-one trillion, two hundred billion, two hundred twelve million, twenty thousand, thirty-seven".