121111012112 has 10 divisors (see below), whose sum is σ = 234652585998. Its totient is φ = 60555506048.

The previous prime is 121111012097. The next prime is 121111012123. The reversal of 121111012112 is 211210111121.

It can be written as a sum of positive squares in only one way, i.e., 110001008896 + 11110003216 = 331664^2 + 105404^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3784719113 + ... + 3784719144.

Almost surely, 2^121111012112 is an apocalyptic number.

It is an amenable number.

121111012112 is a deficient number, since it is larger than the sum of its proper divisors (113541573886).

121111012112 is an equidigital number, since it uses as much as digits as its factorization.

121111012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7569438265 (or 7569438259 counting only the distinct ones).

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

Adding to 121111012112 its reverse (211210111121), we get a palindrome (332321123233).

Subtracting 121111012112 from its reverse (211210111121), we obtain a palindrome (90099099009).

The spelling of 121111012112 in words is "one hundred twenty-one billion, one hundred eleven million, twelve thousand, one hundred twelve".