1222720037 has 16 divisors (see below), whose sum is σ = 1529269632. Its totient is φ = 949744320.

The previous prime is 1222720027. The next prime is 1222720049. The reversal of 1222720037 is 7300272221.

It is not a de Polignac number, because 1222720037 - 2⁴ = 1222720021 is a prime.

It is a super-3 number, since 3×1222720037³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1222719988 and 1222720015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222720027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 638 + ... + 49455.

It is an arithmetic number, because the mean of its divisors is an integer number (95579352).

Almost surely, 2^1222720037 is an apocalyptic number.

It is an amenable number.

1222720037 is a deficient number, since it is larger than the sum of its proper divisors (306549595).

1222720037 is a wasteful number, since it uses less digits than its factorization.

1222720037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50428.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 1222720037 is about 34967.4139306870. The cubic root of 1222720037 is about 1069.3232501123.

Adding to 1222720037 its reverse (7300272221), we get a palindrome (8522992258).

The spelling of 1222720037 in words is "one billion, two hundred twenty-two million, seven hundred twenty thousand, thirty-seven".