1351220001 has 8 divisors (see below), whose sum is σ = 1835619840. Its totient is φ = 883816752.

The previous prime is 1351219963. The next prime is 1351220011. The reversal of 1351220001 is 1000221531.

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

It is not a de Polignac number, because 1351220001 - 2⁶ = 1351219937 is a prime.

It is a super-2 number, since 2×1351220001² = 3651590982204880002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1351220011) 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, 4248961 + ... + 4249278.

It is an arithmetic number, because the mean of its divisors is an integer number (229452480).

Almost surely, 2^1351220001 is an apocalyptic number.

It is an amenable number.

1351220001 is a deficient number, since it is larger than the sum of its proper divisors (484399839).

1351220001 is an equidigital number, since it uses as much as digits as its factorization.

1351220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8498295.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1351220001 is about 36758.9445033450. The cubic root of 1351220001 is about 1105.5422769169.

Adding to 1351220001 its reverse (1000221531), we get a palindrome (2351441532).

The spelling of 1351220001 in words is "one billion, three hundred fifty-one million, two hundred twenty thousand, one".