121120010111 has 4 divisors (see below), whose sum is σ = 121184747424. Its totient is φ = 121055272800.

The previous prime is 121120010057. The next prime is 121120010147. The reversal of 121120010111 is 111010021121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111010021121 = 47 ⋅2361915343.

It is a cyclic number.

It is not a de Polignac number, because 121120010111 - 2¹⁸ = 121119747967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121120010092 and 121120010101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121120010311) 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, 32365850 + ... + 32369591.

It is an arithmetic number, because the mean of its divisors is an integer number (30296186856).

Almost surely, 2^121120010111 is an apocalyptic number.

121120010111 is a deficient number, since it is larger than the sum of its proper divisors (64737313).

121120010111 is an equidigital number, since it uses as much as digits as its factorization.

121120010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64737312.

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

Adding to 121120010111 its reverse (111010021121), we get a palindrome (232130031232).

The spelling of 121120010111 in words is "one hundred twenty-one billion, one hundred twenty million, ten thousand, one hundred eleven".