121040120751 has 16 divisors (see below), whose sum is σ = 186414732288. Its totient is φ = 69042492800.

The previous prime is 121040120741. The next prime is 121040120767. The reversal of 121040120751 is 157021040121.

It is a cyclic number.

It is not a de Polignac number, because 121040120751 - 2⁶ = 121040120687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121040120741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107878335 + ... + 107879456.

It is an arithmetic number, because the mean of its divisors is an integer number (11650920768).

Almost surely, 2^121040120751 is an apocalyptic number.

121040120751 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121040120751 is a deficient number, since it is larger than the sum of its proper divisors (65374611537).

121040120751 is a wasteful number, since it uses less digits than its factorization.

121040120751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215757822.

The product of its (nonzero) digits is 560, while the sum is 24.

Adding to 121040120751 its reverse (157021040121), we get a palindrome (278061160872).

The spelling of 121040120751 in words is "one hundred twenty-one billion, forty million, one hundred twenty thousand, seven hundred fifty-one".