221112100037 has 2 divisors, whose sum is σ = 221112100038. Its totient is φ = 221112100036.

The previous prime is 221112100007. The next prime is 221112100043. The reversal of 221112100037 is 730001211122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184789076641 + 36323023396 = 429871^2 + 190586^2 .

It is a cyclic number.

It is not a de Polignac number, because 221112100037 - 2⁶ = 221112099973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221112099991 and 221112100018.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221112100007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110556050018 + 110556050019.

It is an arithmetic number, because the mean of its divisors is an integer number (110556050019).

Almost surely, 2^221112100037 is an apocalyptic number.

It is an amenable number.

221112100037 is a deficient number, since it is larger than the sum of its proper divisors (1).

221112100037 is an equidigital number, since it uses as much as digits as its factorization.

221112100037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 221112100037 its reverse (730001211122), we get a palindrome (951113311159).

The spelling of 221112100037 in words is "two hundred twenty-one billion, one hundred twelve million, one hundred thousand, thirty-seven".