1222001372 has 6 divisors (see below), whose sum is σ = 2138502408. Its totient is φ = 611000684.

The previous prime is 1222001371. The next prime is 1222001381. The reversal of 1222001372 is 2731002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222001371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152750168 + ... + 152750175.

It is an arithmetic number, because the mean of its divisors is an integer number (356417068).

Almost surely, 2^1222001372 is an apocalyptic number.

It is an amenable number.

1222001372 is a deficient number, since it is larger than the sum of its proper divisors (916501036).

1222001372 is a wasteful number, since it uses less digits than its factorization.

1222001372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305500347 (or 305500345 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 1222001372 is about 34957.1362099357. The cubic root of 1222001372 is about 1069.1137075130.

Adding to 1222001372 its reverse (2731002221), we get a palindrome (3953003593).

The spelling of 1222001372 in words is "one billion, two hundred twenty-two million, one thousand, three hundred seventy-two".