1220022631 has 8 divisors (see below), whose sum is σ = 1258535024. Its totient is φ = 1182107520.

The previous prime is 1220022613. The next prime is 1220022659. The reversal of 1220022631 is 1362200221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220022631 - 2¹¹ = 1220020583 is a prime.

It is a super-2 number, since 2×1220022631² = 2976910440304324322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220022599 and 1220022608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220022031) 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 7 ways as a sum of consecutive naturals, for example, 145170 + ... + 153343.

It is an arithmetic number, because the mean of its divisors is an integer number (157316878).

Almost surely, 2^1220022631 is an apocalyptic number.

1220022631 is a deficient number, since it is larger than the sum of its proper divisors (38512393).

1220022631 is an equidigital number, since it uses as much as digits as its factorization.

1220022631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298641.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1220022631 is about 34928.8223534662. The cubic root of 1220022631 is about 1068.5363371835.

Adding to 1220022631 its reverse (1362200221), we get a palindrome (2582222852).

The spelling of 1220022631 in words is "one billion, two hundred twenty million, twenty-two thousand, six hundred thirty-one".