100121122 has 4 divisors (see below), whose sum is σ = 150181686. Its totient is φ = 50060560.

The previous prime is 100121111. The next prime is 100121123. The reversal of 100121122 is 221121001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221121001 = 257 ⋅860393.

It can be written as a sum of positive squares in only one way, i.e., 91412721 + 8708401 = 9561^2 + 2951^2 .

It is a junction number, because it is equal to n+sod(n) for n = 100121099 and 100121108.

It is not an unprimeable number, because it can be changed into a prime (100121123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25030279 + ... + 25030282.

Almost surely, 2^100121122 is an apocalyptic number.

100121122 is a deficient number, since it is larger than the sum of its proper divisors (50060564).

100121122 is an equidigital number, since it uses as much as digits as its factorization.

100121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50060563.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 100121122 is about 10006.0542672924. The cubic root of 100121122 is about 464.3462072590.

Adding to 100121122 its reverse (221121001), we get a palindrome (321242123).

The spelling of 100121122 in words is "one hundred million, one hundred twenty-one thousand, one hundred twenty-two".