20102101211 has 2 divisors, whose sum is σ = 20102101212. Its totient is φ = 20102101210.

The previous prime is 20102101181. The next prime is 20102101291. The reversal of 20102101211 is 11210120102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20102101211 - 2²⁶ = 20034992347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20102101192 and 20102101201.

It is not a weakly prime, because it can be changed into another prime (20102101291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051050605 + 10051050606.

It is an arithmetic number, because the mean of its divisors is an integer number (10051050606).

Almost surely, 2^20102101211 is an apocalyptic number.

20102101211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102101211 is an equidigital number, since it uses as much as digits as its factorization.

20102101211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20102101211 its reverse (11210120102), we get a palindrome (31312221313).

The spelling of 20102101211 in words is "twenty billion, one hundred two million, one hundred one thousand, two hundred eleven".