121120112101 has 4 divisors (see below), whose sum is σ = 122231305900. Its totient is φ = 120008918304.

The previous prime is 121120112077. The next prime is 121120112137. The reversal of 121120112101 is 101211021121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 106781247076 + 14338865025 = 326774^2 + 119745^2 .

It is a cyclic number.

It is not a de Polignac number, because 121120112101 - 2¹⁷ = 121119981029 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 (121120119101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555596736 + ... + 555596953.

It is an arithmetic number, because the mean of its divisors is an integer number (30557826475).

Almost surely, 2^121120112101 is an apocalyptic number.

It is an amenable number.

121120112101 is a deficient number, since it is larger than the sum of its proper divisors (1111193799).

121120112101 is a wasteful number, since it uses less digits than its factorization.

121120112101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111193798.

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

Adding to 121120112101 its reverse (101211021121), we get a palindrome (222331133222).

The spelling of 121120112101 in words is "one hundred twenty-one billion, one hundred twenty million, one hundred twelve thousand, one hundred one".