10020111211 has 4 divisors (see below), whose sum is σ = 10931030424. Its totient is φ = 9109192000.

The previous prime is 10020111203. The next prime is 10020111223. The reversal of 10020111211 is 11211102001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10020111211 - 2³ = 10020111203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10020111251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455459590 + ... + 455459611.

It is an arithmetic number, because the mean of its divisors is an integer number (2732757606).

Almost surely, 2^10020111211 is an apocalyptic number.

10020111211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10020111211 is a deficient number, since it is larger than the sum of its proper divisors (910919213).

10020111211 is an equidigital number, since it uses as much as digits as its factorization.

10020111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910919212.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 10020111211 its reverse (11211102001), we get a palindrome (21231213212).

The spelling of 10020111211 in words is "ten billion, twenty million, one hundred eleven thousand, two hundred eleven".