1210222212111 has 32 divisors (see below), whose sum is σ = 1956067280640. Its totient is φ = 733410784800.

The previous prime is 1210222212109. The next prime is 1210222212149. The reversal of 1210222212111 is 1112122220121.

1210222212111 is a `hidden beast` number, since 1 + 210 + 22 + 221 + 211 + 1 = 666.

It is not a de Polignac number, because 1210222212111 - 2¹ = 1210222212109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210222212191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3821896 + ... + 4126418.

It is an arithmetic number, because the mean of its divisors is an integer number (61127102520).

Almost surely, 2^{1210222212111} is an apocalyptic number.

1210222212111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1210222212111 is a deficient number, since it is larger than the sum of its proper divisors (745845068529).

1210222212111 is a wasteful number, since it uses less digits than its factorization.

1210222212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317924 (or 317918 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1210222212111 its reverse (1112122220121), we get a palindrome (2322344432232).

The spelling of 1210222212111 in words is "one trillion, two hundred ten billion, two hundred twenty-two million, two hundred twelve thousand, one hundred eleven".