1102121212111 has 4 divisors (see below), whose sum is σ = 1104051372424. Its totient is φ = 1100191051800.

The previous prime is 1102121212099. The next prime is 1102121212147. The reversal of 1102121212111 is 1112121212011.

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 1102121212111 - 2⁹ = 1102121211599 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 (1102121212151) 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, 965079300 + ... + 965080441.

It is an arithmetic number, because the mean of its divisors is an integer number (276012843106).

Almost surely, 2^{1102121212111} is an apocalyptic number.

1102121212111 is a deficient number, since it is larger than the sum of its proper divisors (1930160313).

1102121212111 is an equidigital number, since it uses as much as digits as its factorization.

1102121212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930160312.

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

Adding to 1102121212111 its reverse (1112121212011), we get a palindrome (2214242424122).

The spelling of 1102121212111 in words is "one trillion, one hundred two billion, one hundred twenty-one million, two hundred twelve thousand, one hundred eleven".