121011321031 has 8 divisors (see below), whose sum is σ = 124919878784. Its totient is φ = 117103073760.

The previous prime is 121011321029. The next prime is 121011321037. The reversal of 121011321031 is 130123110121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121011321031 - 2¹ = 121011321029 is a prime.

It is a super-2 number, since 2×121011321031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121011320996 and 121011321014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011321037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 916945 + ... + 1040581.

It is an arithmetic number, because the mean of its divisors is an integer number (15614984848).

Almost surely, 2^121011321031 is an apocalyptic number.

121011321031 is a deficient number, since it is larger than the sum of its proper divisors (3908557753).

121011321031 is a wasteful number, since it uses less digits than its factorization.

121011321031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155241.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 121011321031 its reverse (130123110121), we get a palindrome (251134431152).

The spelling of 121011321031 in words is "one hundred twenty-one billion, eleven million, three hundred twenty-one thousand, thirty-one".