10121121144 has 48 divisors (see below), whose sum is σ = 27433387800. Its totient is φ = 3370997184.

The previous prime is 10121121137. The next prime is 10121121163. The reversal of 10121121144 is 44112112101.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34822 + ... + 146474.

Almost surely, 2^10121121144 is an apocalyptic number.

It is an amenable number.

10121121144 is an abundant number, since it is smaller than the sum of its proper divisors (17312266656).

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

10121121144 is a wasteful number, since it uses less digits than its factorization.

10121121144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112924 (or 112917 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10121121144 its reverse (44112112101), we get a palindrome (54233233245).

The spelling of 10121121144 in words is "ten billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred forty-four".