1210101222111 has 16 divisors (see below), whose sum is σ = 1652099825664. Its totient is φ = 787508017184.

The previous prime is 1210101222103. The next prime is 1210101222181. The reversal of 1210101222111 is 1112221010121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1210101222111 - 2³ = 1210101222103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210101222181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11150016 + ... + 11258021.

It is an arithmetic number, because the mean of its divisors is an integer number (103256239104).

Almost surely, 2^{1210101222111} is an apocalyptic number.

1210101222111 is a deficient number, since it is larger than the sum of its proper divisors (441998603553).

1210101222111 is a wasteful number, since it uses less digits than its factorization.

1210101222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22408470.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1210101222111 its reverse (1112221010121), we get a palindrome (2322322232232).

The spelling of 1210101222111 in words is "one trillion, two hundred ten billion, one hundred one million, two hundred twenty-two thousand, one hundred eleven".