2111010012221 has 16 divisors (see below), whose sum is σ = 2352570635520. Its totient is φ = 1877747143680.

The previous prime is 2111010012203. The next prime is 2111010012233. The reversal of 2111010012221 is 1222100101112.

It is a cyclic number.

It is not a de Polignac number, because 2111010012221 - 2¹⁴ = 2111009995837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111010012196 and 2111010012205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111010012281) 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 15 ways as a sum of consecutive naturals, for example, 1305545 + ... + 2434433.

It is an arithmetic number, because the mean of its divisors is an integer number (147035664720).

Almost surely, 2^{2111010012221} is an apocalyptic number.

It is an amenable number.

2111010012221 is a deficient number, since it is larger than the sum of its proper divisors (241560623299).

2111010012221 is a wasteful number, since it uses less digits than its factorization.

2111010012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132564.

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

Adding to 2111010012221 its reverse (1222100101112), we get a palindrome (3333110113333).

The spelling of 2111010012221 in words is "two trillion, one hundred eleven billion, ten million, twelve thousand, two hundred twenty-one".