20310102101 has 2 divisors, whose sum is σ = 20310102102. Its totient is φ = 20310102100.

The previous prime is 20310102097. The next prime is 20310102107. The reversal of 20310102101 is 10120101302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20309100100 + 1002001 = 142510^2 + 1001^2 .

It is a cyclic number.

It is not a de Polignac number, because 20310102101 - 2² = 20310102097 is a prime.

It is a super-2 number, since 2×20310102101² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20310102107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155051050 + 10155051051.

It is an arithmetic number, because the mean of its divisors is an integer number (10155051051).

Almost surely, 2^20310102101 is an apocalyptic number.

It is an amenable number.

20310102101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20310102101 is an equidigital number, since it uses as much as digits as its factorization.

20310102101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20310102101 its reverse (10120101302), we get a palindrome (30430203403).

The spelling of 20310102101 in words is "twenty billion, three hundred ten million, one hundred two thousand, one hundred one".