190122001 has 4 divisors (see below), whose sum is σ = 190440000. Its totient is φ = 189804004.

The previous prime is 190121993. The next prime is 190122011. The reversal of 190122001 is 100221091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100221091 = 5527 ⋅18133.

It is a cyclic number.

It is not a de Polignac number, because 190122001 - 2³ = 190121993 is a prime.

It is a super-2 number, since 2×190122001² = 72292750528488002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190122011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158101 + ... + 159298.

It is an arithmetic number, because the mean of its divisors is an integer number (47610000).

Almost surely, 2^190122001 is an apocalyptic number.

It is an amenable number.

190122001 is a deficient number, since it is larger than the sum of its proper divisors (317999).

190122001 is an equidigital number, since it uses as much as digits as its factorization.

190122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317998.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 190122001 is about 13788.4734833121. The cubic root of 190122001 is about 575.0127291448.

Adding to 190122001 its reverse (100221091), we get a palindrome (290343092).

The spelling of 190122001 in words is "one hundred ninety million, one hundred twenty-two thousand, one".