121100231011 has 16 divisors (see below), whose sum is σ = 130643251200. Its totient is φ = 111876724800.

The previous prime is 121100230997. The next prime is 121100231023. The reversal of 121100231011 is 110132001121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121100231011 - 2¹⁹ = 121099706723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121100230982 and 121100231000.

It is not an unprimeable number, because it can be changed into a prime (121100231081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1709466 + ... + 1778896.

It is an arithmetic number, because the mean of its divisors is an integer number (8165203200).

Almost surely, 2^121100231011 is an apocalyptic number.

121100231011 is a deficient number, since it is larger than the sum of its proper divisors (9543020189).

121100231011 is a wasteful number, since it uses less digits than its factorization.

121100231011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71730.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 121100231011 its reverse (110132001121), we get a palindrome (231232232132).

The spelling of 121100231011 in words is "one hundred twenty-one billion, one hundred million, two hundred thirty-one thousand, eleven".