130142221 has 4 divisors (see below), whose sum is σ = 141973344. Its totient is φ = 118311100.

The previous prime is 130142203. The next prime is 130142231. The reversal of 130142221 is 122241031.

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.

It is a cyclic number.

It is not a de Polignac number, because 130142221 - 2⁷ = 130142093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130142195 and 130142204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130142231) 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, 5915545 + ... + 5915566.

It is an arithmetic number, because the mean of its divisors is an integer number (35493336).

Almost surely, 2^130142221 is an apocalyptic number.

130142221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

130142221 is a deficient number, since it is larger than the sum of its proper divisors (11831123).

130142221 is a wasteful number, since it uses less digits than its factorization.

130142221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11831122.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 130142221 is about 11407.9893495743. The cubic root of 130142221 is about 506.7643686144.

Adding to 130142221 its reverse (122241031), we get a palindrome (252383252).

The spelling of 130142221 in words is "one hundred thirty million, one hundred forty-two thousand, two hundred twenty-one".