101211122111 has 8 divisors (see below), whose sum is σ = 111389233104. Its totient is φ = 91195861120.

The previous prime is 101211122107. The next prime is 101211122137. The reversal of 101211122111 is 111221112101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101211122111 - 2² = 101211122107 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 (101211122141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40711196 + ... + 40713681.

It is an arithmetic number, because the mean of its divisors is an integer number (13923654138).

Almost surely, 2^101211122111 is an apocalyptic number.

101211122111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

101211122111 is a deficient number, since it is larger than the sum of its proper divisors (10178110993).

101211122111 is a wasteful number, since it uses less digits than its factorization.

101211122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81425001.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 101211122111 its reverse (111221112101), we get a palindrome (212432234212).

It can be divided in two parts, 101211 and 122111, that added together give a palindrome (223322).

The spelling of 101211122111 in words is "one hundred one billion, two hundred eleven million, one hundred twenty-two thousand, one hundred eleven".