100121101001210 has 16 divisors (see below), whose sum is σ = 183172374947592. Its totient is φ = 39391908590400.

The previous prime is 100121101001183. The next prime is 100121101001219. The reversal of 100121101001210 is 12100101121001.

It can be written as a sum of positive squares in 4 ways, for example, as 25904547301801 + 74216553699409 = 5089651^2 + 8614903^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100121101001191 and 100121101001200.

It is not an unprimeable number, because it can be changed into a prime (100121101001219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82066475621 + ... + 82066476840.

Almost surely, 2^{100121101001210} is an apocalyptic number.

100121101001210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100121101001210 is a deficient number, since it is larger than the sum of its proper divisors (83051273946382).

100121101001210 is a wasteful number, since it uses less digits than its factorization.

100121101001210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164132952529.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 100121101001210 its reverse (12100101121001), we get a palindrome (112221202122211).

The spelling of 100121101001210 in words is "one hundred trillion, one hundred twenty-one billion, one hundred one million, one thousand, two hundred ten".