11021123502 has 12 divisors (see below), whose sum is σ = 23879100960. Its totient is φ = 3673707828.

The previous prime is 11021123473. The next prime is 11021123513. The reversal of 11021123502 is 20532112011.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 612284639 = 11021123502 / (1 + 1 + 0 + 2 + 1 + 1 + 2 + 3 + 5 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 306142302 + ... + 306142337.

It is an arithmetic number, because the mean of its divisors is an integer number (1989925080).

Almost surely, 2^11021123502 is an apocalyptic number.

11021123502 is an abundant number, since it is smaller than the sum of its proper divisors (12857977458).

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

11021123502 is a wasteful number, since it uses less digits than its factorization.

11021123502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612284647 (or 612284644 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 11021123502 its reverse (20532112011), we get a palindrome (31553235513).

The spelling of 11021123502 in words is "eleven billion, twenty-one million, one hundred twenty-three thousand, five hundred two".