20102220202123 has 2 divisors, whose sum is σ = 20102220202124. Its totient is φ = 20102220202122.

The previous prime is 20102220202121. The next prime is 20102220202147. The reversal of 20102220202123 is 32120202220102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20102220202123 - 2¹ = 20102220202121 is a prime.

Together with 20102220202121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20102220202123.

It is not a weakly prime, because it can be changed into another prime (20102220202121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051110101061 + 10051110101062.

It is an arithmetic number, because the mean of its divisors is an integer number (10051110101062).

Almost surely, 2^{20102220202123} is an apocalyptic number.

20102220202123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102220202123 is an equidigital number, since it uses as much as digits as its factorization.

20102220202123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20102220202123 its reverse (32120202220102), we get a palindrome (52222422422225).

The spelling of 20102220202123 in words is "twenty trillion, one hundred two billion, two hundred twenty million, two hundred two thousand, one hundred twenty-three".