121011031044 has 18 divisors (see below), whose sum is σ = 305888995230. Its totient is φ = 40337010336.

The previous prime is 121011031019. The next prime is 121011031067. The reversal of 121011031044 is 440130110121.

It can be written as a sum of positive squares in only one way, i.e., 108710002944 + 12301028100 = 329712^2 + 110910^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1680708729 + ... + 1680708800.

Almost surely, 2^121011031044 is an apocalyptic number.

It is an amenable number.

121011031044 is an abundant number, since it is smaller than the sum of its proper divisors (184877964186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121011031044 is a wasteful number, since it uses less digits than its factorization.

121011031044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3361417539 (or 3361417534 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 121011031044 its reverse (440130110121), we get a palindrome (561141141165).

The spelling of 121011031044 in words is "one hundred twenty-one billion, eleven million, thirty-one thousand, forty-four".