1222101272 has 32 divisors (see below), whose sum is σ = 2620175520. Its totient is φ = 523480320.

The previous prime is 1222101271. The next prime is 1222101277. The reversal of 1222101272 is 2721012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222101271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128522 + ... + 137702.

It is an arithmetic number, because the mean of its divisors is an integer number (81880485).

Almost surely, 2^1222101272 is an apocalyptic number.

It is an amenable number.

1222101272 is an abundant number, since it is smaller than the sum of its proper divisors (1398074248).

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

1222101272 is a wasteful number, since it uses less digits than its factorization.

1222101272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11571 (or 11567 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 1222101272 is about 34958.5650735267. The cubic root of 1222101272 is about 1069.1428404724.

Adding to 1222101272 its reverse (2721012221), we get a palindrome (3943113493).

The spelling of 1222101272 in words is "one billion, two hundred twenty-two million, one hundred one thousand, two hundred seventy-two".