121040120131040 has 48 divisors (see below), whose sum is σ = 311953400524080. Its totient is φ = 44014589137920.

The previous prime is 121040120131039. The next prime is 121040120131109. The reversal of 121040120131040 is 40131021040121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34386396005 + ... + 34386399524.

It is an arithmetic number, because the mean of its divisors is an integer number (6499029177585).

Almost surely, 2^{121040120131040} is an apocalyptic number.

121040120131040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121040120131040 is an abundant number, since it is smaller than the sum of its proper divisors (190913280393040).

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

121040120131040 is a wasteful number, since it uses less digits than its factorization.

121040120131040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68772795555 (or 68772795547 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 121040120131040 its reverse (40131021040121), we get a palindrome (161171141171161).

The spelling of 121040120131040 in words is "one hundred twenty-one trillion, forty billion, one hundred twenty million, one hundred thirty-one thousand, forty".