121102020011 has 8 divisors (see below), whose sum is σ = 138413478144. Its totient is φ = 103793354280.

The previous prime is 121102019989. The next prime is 121102020019. The reversal of 121102020011 is 110020201121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121102020011 - 2⁶ = 121102019947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121102019974 and 121102020001.

It is not an unprimeable number, because it can be changed into a prime (121102020019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604325 + ... + 779366.

It is an arithmetic number, because the mean of its divisors is an integer number (17301684768).

Almost surely, 2^121102020011 is an apocalyptic number.

121102020011 is a deficient number, since it is larger than the sum of its proper divisors (17311458133).

121102020011 is a wasteful number, since it uses less digits than its factorization.

121102020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396201.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121102020011 its reverse (110020201121), we get a palindrome (231122221132).

The spelling of 121102020011 in words is "one hundred twenty-one billion, one hundred two million, twenty thousand, eleven".