20066202111 has 16 divisors (see below), whose sum is σ = 27540795744. Its totient is φ = 12989743104.

The previous prime is 20066202097. The next prime is 20066202131. The reversal of 20066202111 is 11120266002.

It is not a de Polignac number, because 20066202111 - 2⁹ = 20066201599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20066202131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635106 + ... + 665951.

It is an arithmetic number, because the mean of its divisors is an integer number (1721299734).

Almost surely, 2^20066202111 is an apocalyptic number.

20066202111 is a deficient number, since it is larger than the sum of its proper divisors (7474593633).

20066202111 is a wasteful number, since it uses less digits than its factorization.

20066202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301210.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20066202111 its reverse (11120266002), we get a palindrome (31186468113).

The spelling of 20066202111 in words is "twenty billion, sixty-six million, two hundred two thousand, one hundred eleven".