1212022272 has 40 divisors (see below), whose sum is σ = 3228907176. Its totient is φ = 404006912.

The previous prime is 1212022243. The next prime is 1212022291. The reversal of 1212022272 is 2722202121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393003 + ... + 396074.

Almost surely, 2^1212022272 is an apocalyptic number.

1212022272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212022272 is an abundant number, since it is smaller than the sum of its proper divisors (2016884904).

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

1212022272 is an frugal number, since it uses more digits than its factorization.

1212022272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789098 (or 789082 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 1212022272 is about 34814.1102428311. The cubic root of 1212022272 is about 1066.1955530655.

Adding to 1212022272 its reverse (2722202121), we get a palindrome (3934224393).

The spelling of 1212022272 in words is "one billion, two hundred twelve million, twenty-two thousand, two hundred seventy-two".