20212232113 has 2 divisors, whose sum is σ = 20212232114. Its totient is φ = 20212232112.

The previous prime is 20212232101. The next prime is 20212232141. The reversal of 20212232113 is 31123221202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12749345569 + 7462886544 = 112913^2 + 86388^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20212232113 is a prime.

It is not a weakly prime, because it can be changed into another prime (20212232153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106116056 + 10106116057.

It is an arithmetic number, because the mean of its divisors is an integer number (10106116057).

Almost surely, 2^20212232113 is an apocalyptic number.

It is an amenable number.

20212232113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212232113 is an equidigital number, since it uses as much as digits as its factorization.

20212232113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20212232113 its reverse (31123221202), we get a palindrome (51335453315).

The spelling of 20212232113 in words is "twenty billion, two hundred twelve million, two hundred thirty-two thousand, one hundred thirteen".