121012012311 has 8 divisors (see below), whose sum is σ = 161357361024. Its totient is φ = 80670669240.

The previous prime is 121012012309. The next prime is 121012012337. The reversal of 121012012311 is 113210210121.

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

It is not a de Polignac number, because 121012012311 - 2¹ = 121012012309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012012351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930195 + ... + 1052276.

It is an arithmetic number, because the mean of its divisors is an integer number (20169670128).

Almost surely, 2^121012012311 is an apocalyptic number.

121012012311 is a deficient number, since it is larger than the sum of its proper divisors (40345348713).

121012012311 is a wasteful number, since it uses less digits than its factorization.

121012012311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002821.

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

Adding to 121012012311 its reverse (113210210121), we get a palindrome (234222222432).

The spelling of 121012012311 in words is "one hundred twenty-one billion, twelve million, twelve thousand, three hundred eleven".