10111212021211 has 12 divisors (see below), whose sum is σ = 11878477817760. Its totient is φ = 8580943719600.

The previous prime is 10111212021199. The next prime is 10111212021329. The reversal of 10111212021211 is 11212021211101.

It is not a de Polignac number, because 10111212021211 - 2¹¹ = 10111212019163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10111212031211) 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 11 ways as a sum of consecutive naturals, for example, 1021535971 + ... + 1021545868.

It is an arithmetic number, because the mean of its divisors is an integer number (989873151480).

Almost surely, 2^{10111212021211} is an apocalyptic number.

10111212021211 is a deficient number, since it is larger than the sum of its proper divisors (1767265796549).

10111212021211 is a wasteful number, since it uses less digits than its factorization.

10111212021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043081954 (or 2043081947 counting only the distinct ones).

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

Adding to 10111212021211 its reverse (11212021211101), we get a palindrome (21323233232312).

It can be divided in two parts, 101 and 11212021211, that multiplied together give a palindrome (1132414142311).

The spelling of 10111212021211 in words is "ten trillion, one hundred eleven billion, two hundred twelve million, twenty-one thousand, two hundred eleven".