121001323011 has 12 divisors (see below), whose sum is σ = 171383651352. Its totient is φ = 75922398208.

The previous prime is 121001322997. The next prime is 121001323019. The reversal of 121001323011 is 110323100121.

It is a happy number.

It is not a de Polignac number, because 121001323011 - 2³⁵ = 86641584643 is a prime.

It is a super-3 number, since 3×121001323011³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (121001323019) 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 11 ways as a sum of consecutive naturals, for example, 69780750 + ... + 69782483.

It is an arithmetic number, because the mean of its divisors is an integer number (14281970946).

Almost surely, 2^121001323011 is an apocalyptic number.

121001323011 is a deficient number, since it is larger than the sum of its proper divisors (50382328341).

121001323011 is a wasteful number, since it uses less digits than its factorization.

121001323011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139563270 (or 139563253 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 121001323011 its reverse (110323100121), we get a palindrome (231324423132).

The spelling of 121001323011 in words is "one hundred twenty-one billion, one million, three hundred twenty-three thousand, eleven".