101220111112 has 8 divisors (see below), whose sum is σ = 189787708350. Its totient is φ = 50610055552.

The previous prime is 101220111107. The next prime is 101220111173. The reversal of 101220111112 is 211111022101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 59943687556 + 41276423556 = 244834^2 + 203166^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 101220111092 and 101220111101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6326256937 + ... + 6326256952.

Almost surely, 2^101220111112 is an apocalyptic number.

It is an amenable number.

101220111112 is a deficient number, since it is larger than the sum of its proper divisors (88567597238).

101220111112 is a wasteful number, since it uses less digits than its factorization.

101220111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12652513895 (or 12652513891 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 101220111112 its reverse (211111022101), we get a palindrome (312331133213).

The spelling of 101220111112 in words is "one hundred one billion, two hundred twenty million, one hundred eleven thousand, one hundred twelve".