1002020220115 has 4 divisors (see below), whose sum is σ = 1202424264144. Its totient is φ = 801616176088.

The previous prime is 1002020220109. The next prime is 1002020220161. The reversal of 1002020220115 is 5110220202001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002020220115 is a prime.

It is a super-2 number, since 2×1002020220115² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100202022007 + ... + 100202022016.

It is an arithmetic number, because the mean of its divisors is an integer number (300606066036).

Almost surely, 2^{1002020220115} is an apocalyptic number.

1002020220115 is a deficient number, since it is larger than the sum of its proper divisors (200404044029).

1002020220115 is an equidigital number, since it uses as much as digits as its factorization.

1002020220115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200404044028.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 1002020220115 its reverse (5110220202001), we get a palindrome (6112240422116).

The spelling of 1002020220115 in words is "one trillion, two billion, twenty million, two hundred twenty thousand, one hundred fifteen".