20102232011 has 4 divisors (see below), whose sum is σ = 20108476224. Its totient is φ = 20095987800.

The previous prime is 20102231999. The next prime is 20102232037. The reversal of 20102232011 is 11023220102.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20102232011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20102232071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3117275 + ... + 3123716.

It is an arithmetic number, because the mean of its divisors is an integer number (5027119056).

Almost surely, 2^20102232011 is an apocalyptic number.

20102232011 is a deficient number, since it is larger than the sum of its proper divisors (6244213).

20102232011 is an equidigital number, since it uses as much as digits as its factorization.

20102232011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6244212.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20102232011 its reverse (11023220102), we get a palindrome (31125452113).

The spelling of 20102232011 in words is "twenty billion, one hundred two million, two hundred thirty-two thousand, eleven".