100121212110195 has 48 divisors (see below), whose sum is σ = 177802014866112. Its totient is φ = 52103154216960.

The previous prime is 100121212110193. The next prime is 100121212110223. The reversal of 100121212110195 is 591011212121001.

It is not a de Polignac number, because 100121212110195 - 2¹ = 100121212110193 is a prime.

It is a super-2 number, since 2×100121212110195² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100121212110193) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 161220202 + ... + 161840031.

It is an arithmetic number, because the mean of its divisors is an integer number (3704208643044).

Almost surely, 2^{100121212110195} is an apocalyptic number.

100121212110195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

100121212110195 is a deficient number, since it is larger than the sum of its proper divisors (77680802755917).

100121212110195 is a wasteful number, since it uses less digits than its factorization.

100121212110195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323060412 (or 323060409 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 27.

Adding to 100121212110195 its reverse (591011212121001), we get a palindrome (691132424231196).

The spelling of 100121212110195 in words is "one hundred trillion, one hundred twenty-one billion, two hundred twelve million, one hundred ten thousand, one hundred ninety-five".