2221210210111 has 4 divisors (see below), whose sum is σ = 2222261423872. Its totient is φ = 2220158996352.

The previous prime is 2221210210033. The next prime is 2221210210123. The reversal of 2221210210111 is 1110120121222.

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 2221210210111 - 2⁹ = 2221210209599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221210213111) 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, 525603711 + ... + 525607936.

It is an arithmetic number, because the mean of its divisors is an integer number (555565355968).

Almost surely, 2^{2221210210111} is an apocalyptic number.

2221210210111 is a deficient number, since it is larger than the sum of its proper divisors (1051213761).

2221210210111 is a wasteful number, since it uses less digits than its factorization.

2221210210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051213760.

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

Adding to 2221210210111 its reverse (1110120121222), we get a palindrome (3331330331333).

The spelling of 2221210210111 in words is "two trillion, two hundred twenty-one billion, two hundred ten million, two hundred ten thousand, one hundred eleven".