1021220112211 has 8 divisors (see below), whose sum is σ = 1107803065824. Its totient is φ = 935783952960.

The previous prime is 1021220112193. The next prime is 1021220112229. The reversal of 1021220112211 is 1122110221201.

It is an interprime number because it is at equal distance from previous prime (1021220112193) and next prime (1021220112229).

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

It is a cyclic number.

It is not a de Polignac number, because 1021220112211 - 2⁵ = 1021220112179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021220112271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286696735 + ... + 286700296.

It is an arithmetic number, because the mean of its divisors is an integer number (138475383228).

Almost surely, 2^{1021220112211} is an apocalyptic number.

1021220112211 is a deficient number, since it is larger than the sum of its proper divisors (86582953613).

1021220112211 is a wasteful number, since it uses less digits than its factorization.

1021220112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573397181.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1021220112211 its reverse (1122110221201), we get a palindrome (2143330333412).

The spelling of 1021220112211 in words is "one trillion, twenty-one billion, two hundred twenty million, one hundred twelve thousand, two hundred eleven".