11012661252 has 18 divisors (see below), whose sum is σ = 27837560478. Its totient is φ = 3670887072.

The previous prime is 11012661221. The next prime is 11012661277. The reversal of 11012661252 is 25216621011.

It can be written as a sum of positive squares in only one way, i.e., 8694816516 + 2317844736 = 93246^2 + 48144^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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, 152953593 + ... + 152953664.

Almost surely, 2^11012661252 is an apocalyptic number.

11012661252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11012661252 is an abundant number, since it is smaller than the sum of its proper divisors (16824899226).

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

11012661252 is a wasteful number, since it uses less digits than its factorization.

11012661252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305907267 (or 305907262 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The spelling of 11012661252 in words is "eleven billion, twelve million, six hundred sixty-one thousand, two hundred fifty-two".