101221937 has 2 divisors, whose sum is σ = 101221938. Its totient is φ = 101221936.

The previous prime is 101221933. The next prime is 101221963. The reversal of 101221937 is 739122101.

It is an a-pointer prime, because the next prime (101221963) can be obtained adding 101221937 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99820081 + 1401856 = 9991^2 + 1184^2 .

It is a cyclic number.

It is not a de Polignac number, because 101221937 - 2² = 101221933 is a prime.

It is not a weakly prime, because it can be changed into another prime (101221933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50610968 + 50610969.

It is an arithmetic number, because the mean of its divisors is an integer number (50610969).

Almost surely, 2^101221937 is an apocalyptic number.

It is an amenable number.

101221937 is a deficient number, since it is larger than the sum of its proper divisors (1).

101221937 is an equidigital number, since it uses as much as digits as its factorization.

101221937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 101221937 is about 10060.9113404303. The cubic root of 101221937 is about 466.0418110421.

The spelling of 101221937 in words is "one hundred one million, two hundred twenty-one thousand, nine hundred thirty-seven".