11021201252 has 12 divisors (see below), whose sum is σ = 20421637740. Its totient is φ = 5186447616.

The previous prime is 11021201197. The next prime is 11021201281. The reversal of 11021201252 is 25210212011.

It can be written as a sum of positive squares in 2 ways, for example, as 9804168256 + 1217032996 = 99016^2 + 34886^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 11021201252.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81038177 + ... + 81038312.

It is an arithmetic number, because the mean of its divisors is an integer number (1701803145).

Almost surely, 2^11021201252 is an apocalyptic number.

It is an amenable number.

11021201252 is a deficient number, since it is larger than the sum of its proper divisors (9400436488).

11021201252 is a wasteful number, since it uses less digits than its factorization.

11021201252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162076510 (or 162076508 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 11021201252 its reverse (25210212011), we get a palindrome (36231413263).

The spelling of 11021201252 in words is "eleven billion, twenty-one million, two hundred one thousand, two hundred fifty-two".