100122022220021 has 16 divisors (see below), whose sum is σ = 101262099818880. Its totient is φ = 98985994159680.

The previous prime is 100122022219949. The next prime is 100122022220063. The reversal of 100122022220021 is 120022220221001.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100122022220021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100122022225021) 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, 1359633215 + ... + 1359706851.

It is an arithmetic number, because the mean of its divisors is an integer number (6328881238680).

Almost surely, 2^{100122022220021} is an apocalyptic number.

It is an amenable number.

100122022220021 is a deficient number, since it is larger than the sum of its proper divisors (1140077598859).

100122022220021 is a wasteful number, since it uses less digits than its factorization.

100122022220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100924.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 100122022220021 its reverse (120022220221001), we get a palindrome (220144242441022).

The spelling of 100122022220021 in words is "one hundred trillion, one hundred twenty-two billion, twenty-two million, two hundred twenty thousand, twenty-one".