20120130443401 has 2 divisors, whose sum is σ = 20120130443402. Its totient is φ = 20120130443400.

The previous prime is 20120130443389. The next prime is 20120130443423. The reversal of 20120130443401 is 10434403102102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19058768953225 + 1061361490176 = 4365635^2 + 1030224^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120130443401 - 2¹⁷ = 20120130312329 is a prime.

It is not a weakly prime, because it can be changed into another prime (20120130443431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060065221700 + 10060065221701.

It is an arithmetic number, because the mean of its divisors is an integer number (10060065221701).

Almost surely, 2^{20120130443401} is an apocalyptic number.

It is an amenable number.

20120130443401 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120130443401 is an equidigital number, since it uses as much as digits as its factorization.

20120130443401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 20120130443401 its reverse (10434403102102), we get a palindrome (30554533545503).

The spelling of 20120130443401 in words is "twenty trillion, one hundred twenty billion, one hundred thirty million, four hundred forty-three thousand, four hundred one".