101222109 has 8 divisors (see below), whose sum is σ = 149958720. Its totient is φ = 67481388.

The previous prime is 101222083. The next prime is 101222113. The reversal of 101222109 is 901222101.

It is a de Polignac number, because none of the positive numbers 2^k-101222109 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 101222091 and 101222100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101222159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1874457 + ... + 1874510.

It is an arithmetic number, because the mean of its divisors is an integer number (18744840).

Almost surely, 2^101222109 is an apocalyptic number.

It is an amenable number.

101222109 is a deficient number, since it is larger than the sum of its proper divisors (48736611).

101222109 is an equidigital number, since it uses as much as digits as its factorization.

101222109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3748976 (or 3748970 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 101222109 is about 10060.9198883601. The cubic root of 101222109 is about 466.0420750137.

The spelling of 101222109 in words is "one hundred one million, two hundred twenty-two thousand, one hundred nine".