121005011 has 4 divisors (see below), whose sum is σ = 122536800. Its totient is φ = 119473224.

The previous prime is 121004999. The next prime is 121005013. The reversal of 121005011 is 110500121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110500121 = 29 ⋅3810349.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121005011 is a prime.

It is a super-2 number, since 2×121005011² = 29284425374220242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121004983 and 121005001.

It is not an unprimeable number, because it can be changed into a prime (121005013) 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, 765776 + ... + 765933.

It is an arithmetic number, because the mean of its divisors is an integer number (30634200).

Almost surely, 2^121005011 is an apocalyptic number.

121005011 is a deficient number, since it is larger than the sum of its proper divisors (1531789).

121005011 is an equidigital number, since it uses as much as digits as its factorization.

121005011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531788.

The product of its (nonzero) digits is 10, while the sum is 11.

The square root of 121005011 is about 11000.2277703691. The cubic root of 121005011 is about 494.6155720114.

Adding to 121005011 its reverse (110500121), we get a palindrome (231505132).

The spelling of 121005011 in words is "one hundred twenty-one million, five thousand, eleven".