1220120101015 has 8 divisors (see below), whose sum is σ = 1464341729328. Its totient is φ = 975964342080.

The previous prime is 1220120101001. The next prime is 1220120101027. The reversal of 1220120101015 is 5101010210221.

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

It is not a de Polignac number, because 1220120101015 - 2⁹ = 1220120100503 is a prime.

It is a super-3 number, since 3×1220120101015³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220120101015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16426582 + ... + 16500691.

It is an arithmetic number, because the mean of its divisors is an integer number (183042716166).

Almost surely, 2^{1220120101015} is an apocalyptic number.

1220120101015 is a deficient number, since it is larger than the sum of its proper divisors (244221628313).

1220120101015 is an equidigital number, since it uses as much as digits as its factorization.

1220120101015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32934689.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 1220120101015 its reverse (5101010210221), we get a palindrome (6321130311236).

The spelling of 1220120101015 in words is "one trillion, two hundred twenty billion, one hundred twenty million, one hundred one thousand, fifteen".