12211155270 has 64 divisors (see below), whose sum is σ = 32629754880. Its totient is φ = 3249640800.

The previous prime is 12211155241. The next prime is 12211155287. The reversal of 12211155270 is 7255111221.

12211155270 is a `hidden beast` number, since 1 + 2 + 21 + 115 + 527 + 0 = 666.

It is a super-2 number, since 2×12211155270² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86515 + ... + 178625.

It is an arithmetic number, because the mean of its divisors is an integer number (509839920).

Almost surely, 2^12211155270 is an apocalyptic number.

12211155270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12211155270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16314877440).

12211155270 is an abundant number, since it is smaller than the sum of its proper divisors (20418599610).

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

12211155270 is a wasteful number, since it uses less digits than its factorization.

12211155270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92618 (or 92612 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

Adding to 12211155270 its reverse (7255111221), we get a palindrome (19466266491).

The spelling of 12211155270 in words is "twelve billion, two hundred eleven million, one hundred fifty-five thousand, two hundred seventy".