190101121 has 4 divisors (see below), whose sum is σ = 217258432. Its totient is φ = 162943812.

The previous prime is 190101091. The next prime is 190101161. The reversal of 190101121 is 121101091.

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: 121101091 = 149 ⋅812759.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190101121 is a prime.

It is a super-2 number, since 2×190101121² = 72276872410913282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 190101095 and 190101104.

It is not an unprimeable number, because it can be changed into a prime (190101161) 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 in 3 ways as a sum of consecutive naturals, for example, 13578645 + ... + 13578658.

It is an arithmetic number, because the mean of its divisors is an integer number (54314608).

Almost surely, 2^190101121 is an apocalyptic number.

It is an amenable number.

190101121 is a deficient number, since it is larger than the sum of its proper divisors (27157311).

190101121 is an equidigital number, since it uses as much as digits as its factorization.

190101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27157310.

The product of its (nonzero) digits is 18, while the sum is 16.

The square root of 190101121 is about 13787.7163083667. The cubic root of 190101121 is about 574.9916782665.

The spelling of 190101121 in words is "one hundred ninety million, one hundred one thousand, one hundred twenty-one".