101222001 has 8 divisors (see below), whose sum is σ = 149958560. Its totient is φ = 67481316.

The previous prime is 101221979. The next prime is 101222021. The reversal of 101222001 is 100222101.

It is not a de Polignac number, because 101222001 - 2⁶ = 101221937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101222021) 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, 1874455 + ... + 1874508.

It is an arithmetic number, because the mean of its divisors is an integer number (18744820).

Almost surely, 2^101222001 is an apocalyptic number.

It is an amenable number.

101222001 is a deficient number, since it is larger than the sum of its proper divisors (48736559).

101222001 is an equidigital number, since it uses as much as digits as its factorization.

101222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3748972 (or 3748966 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 101222001 is about 10060.9145210562. The cubic root of 101222001 is about 466.0419092642.

Adding to 101222001 its reverse (100222101), we get a palindrome (201444102).

The spelling of 101222001 in words is "one hundred one million, two hundred twenty-two thousand, one".