2021001222195 has 24 divisors (see below), whose sum is σ = 3709131656256. Its totient is φ = 1014463358208.

The previous prime is 2021001222181. The next prime is 2021001222221. The reversal of 2021001222195 is 5912221001202.

It is a happy number.

It is not a de Polignac number, because 2021001222195 - 2⁶ = 2021001222131 is a prime.

It is a super-2 number, since 2×2021001222195² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1320915067 + ... + 1320916596.

It is an arithmetic number, because the mean of its divisors is an integer number (154547152344).

Almost surely, 2^{2021001222195} is an apocalyptic number.

2021001222195 is a deficient number, since it is larger than the sum of its proper divisors (1688130434061).

2021001222195 is a wasteful number, since it uses less digits than its factorization.

2021001222195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641831691 (or 2641831688 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

Adding to 2021001222195 its reverse (5912221001202), we get a palindrome (7933222223397).

The spelling of 2021001222195 in words is "two trillion, twenty-one billion, one million, two hundred twenty-two thousand, one hundred ninety-five".