11211231022 has 4 divisors (see below), whose sum is σ = 16816846536. Its totient is φ = 5605615510.

The previous prime is 11211231007. The next prime is 11211231023. The reversal of 11211231022 is 22013211211.

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

It is a junction number, because it is equal to n+sod(n) for n = 11211230987 and 11211231005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211231023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2802807754 + ... + 2802807757.

It is an arithmetic number, because the mean of its divisors is an integer number (4204211634).

Almost surely, 2^11211231022 is an apocalyptic number.

11211231022 is a deficient number, since it is larger than the sum of its proper divisors (5605615514).

11211231022 is an equidigital number, since it uses as much as digits as its factorization.

11211231022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5605615513.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11211231022 its reverse (22013211211), we get a palindrome (33224442233).

The spelling of 11211231022 in words is "eleven billion, two hundred eleven million, two hundred thirty-one thousand, twenty-two".