1171572207212 has 48 divisors (see below), whose sum is σ = 2367571852800. Its totient is φ = 502212164160.

The previous prime is 1171572207209. The next prime is 1171572207217. The reversal of 1171572207212 is 2127022751711.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1171572207217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10621412 + ... + 10731147.

It is an arithmetic number, because the mean of its divisors is an integer number (49324413600).

Almost surely, 2^{1171572207212} is an apocalyptic number.

It is an amenable number.

1171572207212 is an abundant number, since it is smaller than the sum of its proper divisors (1195999645588).

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

1171572207212 is a wasteful number, since it uses less digits than its factorization.

1171572207212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21352646 (or 21352644 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 38.

Adding to 1171572207212 its reverse (2127022751711), we get a palindrome (3298594958923).

The spelling of 1171572207212 in words is "one trillion, one hundred seventy-one billion, five hundred seventy-two million, two hundred seven thousand, two hundred twelve".