1211170160 has 40 divisors (see below), whose sum is σ = 2840911920. Its totient is φ = 480177152.

The previous prime is 1211170159. The next prime is 1211170201. The reversal of 1211170160 is 610711121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57950 + ... + 76029.

It is an arithmetic number, because the mean of its divisors is an integer number (71022798).

Almost surely, 2^1211170160 is an apocalyptic number.

1211170160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211170160 is an abundant number, since it is smaller than the sum of its proper divisors (1629741760).

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

1211170160 is a wasteful number, since it uses less digits than its factorization.

1211170160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134105 (or 134099 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 20.

The square root of 1211170160 is about 34801.8700646962. The cubic root of 1211170160 is about 1065.9456316351.

Adding to 1211170160 its reverse (610711121), we get a palindrome (1821881281).

The spelling of 1211170160 in words is "one billion, two hundred eleven million, one hundred seventy thousand, one hundred sixty".