1220031001 has 8 divisors (see below), whose sum is σ = 1395736064. Its totient is φ = 1044679680.

The previous prime is 1220030989. The next prime is 1220031017. The reversal of 1220031001 is 1001300221.

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 1220031001 - 2¹³ = 1220022809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220031031) 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, 81000 + ... + 94873.

It is an arithmetic number, because the mean of its divisors is an integer number (174467008).

Almost surely, 2^1220031001 is an apocalyptic number.

It is an amenable number.

1220031001 is a deficient number, since it is larger than the sum of its proper divisors (175705063).

1220031001 is an equidigital number, since it uses as much as digits as its factorization.

1220031001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176871.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1220031001 is about 34928.9421683509. The cubic root of 1220031001 is about 1068.5387807526.

Adding to 1220031001 its reverse (1001300221), we get a palindrome (2221331222).

The spelling of 1220031001 in words is "one billion, two hundred twenty million, thirty-one thousand, one".