111121111020101 has 32 divisors (see below), whose sum is σ = 142881256627200. Its totient is φ = 84047797612800.

The previous prime is 111121111020089. The next prime is 111121111020119. The reversal of 111121111020101 is 101020111121111.

It is not a de Polignac number, because 111121111020101 - 2³⁴ = 111103931150917 is a prime.

It is a super-2 number, since 2×111121111020101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121111020191) 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, 208185341 + ... + 208718418.

It is an arithmetic number, because the mean of its divisors is an integer number (4465039269600).

Almost surely, 2^{111121111020101} is an apocalyptic number.

It is an amenable number.

111121111020101 is a deficient number, since it is larger than the sum of its proper divisors (31760145607099).

111121111020101 is a wasteful number, since it uses less digits than its factorization.

111121111020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416903909.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 111121111020101 its reverse (101020111121111), we get a palindrome (212141222141212).

The spelling of 111121111020101 in words is "one hundred eleven trillion, one hundred twenty-one billion, one hundred eleven million, twenty thousand, one hundred one".