11021021022 has 64 divisors (see below), whose sum is σ = 25329104640. Its totient is φ = 3161721600.

The previous prime is 11021020991. The next prime is 11021021027. The reversal of 11021021022 is 22012012011.

It is a junction number, because it is equal to n+sod(n) for n = 11021020989 and 11021021007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021021027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2858448 + ... + 2862300.

It is an arithmetic number, because the mean of its divisors is an integer number (395767260).

Almost surely, 2^11021021022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11021021022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12664552320).

11021021022 is an abundant number, since it is smaller than the sum of its proper divisors (14308083618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11021021022 is a wasteful number, since it uses less digits than its factorization.

11021021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6169.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11021021022 its reverse (22012012011), we get a palindrome (33033033033).

The spelling of 11021021022 in words is "eleven billion, twenty-one million, twenty-one thousand, twenty-two".