1101210123211 has 4 divisors (see below), whose sum is σ = 1201320134424. Its totient is φ = 1001100112000.

The previous prime is 1101210123197. The next prime is 1101210123287. The reversal of 1101210123211 is 1123210121011.

It is a happy number.

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 1101210123211 - 2⁵ = 1101210123179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101210127211) 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, 50055005590 + ... + 50055005611.

It is an arithmetic number, because the mean of its divisors is an integer number (300330033606).

Almost surely, 2^{1101210123211} is an apocalyptic number.

1101210123211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1101210123211 is a deficient number, since it is larger than the sum of its proper divisors (100110011213).

1101210123211 is a wasteful number, since it uses less digits than its factorization.

1101210123211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100110011212.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1101210123211 its reverse (1123210121011), we get a palindrome (2224420244222).

The spelling of 1101210123211 in words is "one trillion, one hundred one billion, two hundred ten million, one hundred twenty-three thousand, two hundred eleven".