100122011111 has 16 divisors (see below), whose sum is σ = 103117437696. Its totient is φ = 97153560000.

The previous prime is 100122011107. The next prime is 100122011117. The reversal of 100122011111 is 111110221001.

It is a cyclic number.

It is not a de Polignac number, because 100122011111 - 2² = 100122011107 is a prime.

It is a super-2 number, since 2×100122011111² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100122011092 and 100122011101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100122011117) 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, 18432566 + ... + 18437996.

It is an arithmetic number, because the mean of its divisors is an integer number (6444839856).

Almost surely, 2^100122011111 is an apocalyptic number.

100122011111 is a deficient number, since it is larger than the sum of its proper divisors (2995426585).

100122011111 is a wasteful number, since it uses less digits than its factorization.

100122011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7814.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 100122011111 its reverse (111110221001), we get a palindrome (211232232112).

The spelling of 100122011111 in words is "one hundred billion, one hundred twenty-two million, eleven thousand, one hundred eleven".