121012231011 has 32 divisors (see below), whose sum is σ = 185041059840. Its totient is φ = 68909701536.

The previous prime is 121012230929. The next prime is 121012231013. The reversal of 121012231011 is 110132210121.

It is not a de Polignac number, because 121012231011 - 2⁹ = 121012230499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121012231013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7710270 + ... + 7725948.

It is an arithmetic number, because the mean of its divisors is an integer number (5782533120).

Almost surely, 2^121012231011 is an apocalyptic number.

121012231011 is a deficient number, since it is larger than the sum of its proper divisors (64028828829).

121012231011 is a wasteful number, since it uses less digits than its factorization.

121012231011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16943.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 121012231011 its reverse (110132210121), we get a palindrome (231144441132).

The spelling of 121012231011 in words is "one hundred twenty-one billion, twelve million, two hundred thirty-one thousand, eleven".