20212102153 has 2 divisors, whose sum is σ = 20212102154. Its totient is φ = 20212102152.

The previous prime is 20212102063. The next prime is 20212102159. The reversal of 20212102153 is 35120121202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20006122249 + 205979904 = 141443^2 + 14352^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20212102153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20212102153.

It is not a weakly prime, because it can be changed into another prime (20212102159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106051076 + 10106051077.

It is an arithmetic number, because the mean of its divisors is an integer number (10106051077).

Almost surely, 2^20212102153 is an apocalyptic number.

It is an amenable number.

20212102153 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212102153 is an equidigital number, since it uses as much as digits as its factorization.

20212102153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 20212102153 its reverse (35120121202), we get a palindrome (55332223355).

The spelling of 20212102153 in words is "twenty billion, two hundred twelve million, one hundred two thousand, one hundred fifty-three".