101220037 has 2 divisors, whose sum is σ = 101220038. Its totient is φ = 101220036.

The previous prime is 101220013. The next prime is 101220043. The reversal of 101220037 is 730022101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100620961 + 599076 = 10031^2 + 774^2 .

It is a cyclic number.

It is not a de Polignac number, because 101220037 - 2²³ = 92831429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101220037.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101220137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610018 + 50610019.

It is an arithmetic number, because the mean of its divisors is an integer number (50610019).

Almost surely, 2^101220037 is an apocalyptic number.

It is an amenable number.

101220037 is a deficient number, since it is larger than the sum of its proper divisors (1).

101220037 is an equidigital number, since it uses as much as digits as its factorization.

101220037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 101220037 is about 10060.8169151416. The cubic root of 101220037 is about 466.0388950570.

Adding to 101220037 its reverse (730022101), we get a palindrome (831242138).

The spelling of 101220037 in words is "one hundred one million, two hundred twenty thousand, thirty-seven".