130111021 has 2 divisors, whose sum is σ = 130111022. Its totient is φ = 130111020.

The previous prime is 130111019. The next prime is 130111027. The reversal of 130111021 is 120111031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71588521 + 58522500 = 8461^2 + 7650^2 .

It is a cyclic number.

It is not a de Polignac number, because 130111021 - 2¹ = 130111019 is a prime.

Together with 130111019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 130110989 and 130111007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130111027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65055510 + 65055511.

It is an arithmetic number, because the mean of its divisors is an integer number (65055511).

Almost surely, 2^130111021 is an apocalyptic number.

It is an amenable number.

130111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

130111021 is an equidigital number, since it uses as much as digits as its factorization.

130111021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 130111021 is about 11406.6218048991. The cubic root of 130111021 is about 506.7238685321.

Adding to 130111021 its sum of digits (10), we get a palindrome (130111031).

Adding to 130111021 its reverse (120111031), we get a palindrome (250222052).

The spelling of 130111021 in words is "one hundred thirty million, one hundred eleven thousand, twenty-one".