10212220111001 has 4 divisors (see below), whose sum is σ = 10564365632100. Its totient is φ = 9860074589904.

The previous prime is 10212220110991. The next prime is 10212220111021. The reversal of 10212220111001 is 10011102221201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7681101390400 + 2531118720601 = 2771480^2 + 1590949^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10212220111001 is a prime.

It is a super-2 number, since 2×10212220111001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10212220111021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176072760506 + ... + 176072760563.

It is an arithmetic number, because the mean of its divisors is an integer number (2641091408025).

Almost surely, 2^{10212220111001} is an apocalyptic number.

It is an amenable number.

10212220111001 is a deficient number, since it is larger than the sum of its proper divisors (352145521099).

10212220111001 is an equidigital number, since it uses as much as digits as its factorization.

10212220111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352145521098.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10212220111001 its reverse (10011102221201), we get a palindrome (20223322332202).

The spelling of 10212220111001 in words is "ten trillion, two hundred twelve billion, two hundred twenty million, one hundred eleven thousand, one".