20213102011 has 2 divisors, whose sum is σ = 20213102012. Its totient is φ = 20213102010.

The previous prime is 20213101981. The next prime is 20213102033. The reversal of 20213102011 is 11020131202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20213102011 - 2¹³ = 20213093819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20213101982 and 20213102000.

It is not a weakly prime, because it can be changed into another prime (20213102311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106551005 + 10106551006.

It is an arithmetic number, because the mean of its divisors is an integer number (10106551006).

Almost surely, 2^20213102011 is an apocalyptic number.

20213102011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213102011 is an equidigital number, since it uses as much as digits as its factorization.

20213102011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20213102011 its reverse (11020131202), we get a palindrome (31233233213).

The spelling of 20213102011 in words is "twenty billion, two hundred thirteen million, one hundred two thousand, eleven".