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121751531116 = 22109279246631
BaseRepresentation
bin111000101100011110…
…1001110111001101100
3102122021001222121111021
41301120331032321230
53443321342443431
6131533141503524
711540054640055
oct1613075167154
9378231877437
10121751531116
11476a86243a6
121b71a411ba4
13b634036c07
145c6dc0372c
153278b37b11
hex1c58f4ee6c

121751531116 has 12 divisors (see below), whose sum is σ = 215019906640. Its totient is φ = 60317272080.

The previous prime is 121751531101. The next prime is 121751531117. The reversal of 121751531116 is 611135157121.

It is not an unprimeable number, because it can be changed into a prime (121751531117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139622880 + ... + 139623751.

Almost surely, 2121751531116 is an apocalyptic number.

It is an amenable number.

121751531116 is a deficient number, since it is larger than the sum of its proper divisors (93268375524).

121751531116 is a wasteful number, since it uses less digits than its factorization.

121751531116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279246744 (or 279246742 counting only the distinct ones).

The product of its digits is 6300, while the sum is 34.

Adding to 121751531116 its reverse (611135157121), we get a palindrome (732886688237).

The spelling of 121751531116 in words is "one hundred twenty-one billion, seven hundred fifty-one million, five hundred thirty-one thousand, one hundred sixteen".

Divisors: 1 2 4 109 218 436 279246631 558493262 1116986524 30437882779 60875765558 121751531116