1021220011195 has 4 divisors (see below), whose sum is σ = 1225464013440. Its totient is φ = 816976008952.

The previous prime is 1021220011193. The next prime is 1021220011223. The reversal of 1021220011195 is 5911100221201.

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

It is a cyclic number.

It is not a de Polignac number, because 1021220011195 - 2¹ = 1021220011193 is a prime.

It is a super-2 number, since 2×1021220011195² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021220011193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102122001115 + ... + 102122001124.

It is an arithmetic number, because the mean of its divisors is an integer number (306366003360).

Almost surely, 2^{1021220011195} is an apocalyptic number.

1021220011195 is a deficient number, since it is larger than the sum of its proper divisors (204244002245).

1021220011195 is an equidigital number, since it uses as much as digits as its factorization.

1021220011195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204244002244.

The product of its (nonzero) digits is 360, while the sum is 25.

Adding to 1021220011195 its reverse (5911100221201), we get a palindrome (6932320232396).

The spelling of 1021220011195 in words is "one trillion, twenty-one billion, two hundred twenty million, eleven thousand, one hundred ninety-five".