20102003213 has 2 divisors, whose sum is σ = 20102003214. Its totient is φ = 20102003212.

The previous prime is 20102003183. The next prime is 20102003219. The reversal of 20102003213 is 31230020102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18521304649 + 1580698564 = 136093^2 + 39758^2 .

It is a cyclic number.

It is not a de Polignac number, because 20102003213 - 2⁶ = 20102003149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20102003219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051001606 + 10051001607.

It is an arithmetic number, because the mean of its divisors is an integer number (10051001607).

Almost surely, 2^20102003213 is an apocalyptic number.

It is an amenable number.

20102003213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102003213 is an equidigital number, since it uses as much as digits as its factorization.

20102003213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20102003213 its reverse (31230020102), we get a palindrome (51332023315).

The spelling of 20102003213 in words is "twenty billion, one hundred two million, three thousand, two hundred thirteen".