100002100220021 has 16 divisors (see below), whose sum is σ = 104137181763840. Its totient is φ = 95912820931200.

The previous prime is 100002100220017. The next prime is 100002100220053. The reversal of 100002100220021 is 120022001200001.

It is a happy number.

It is not a de Polignac number, because 100002100220021 - 2² = 100002100220017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100002100219984 and 100002100220011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100002100220621) 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, 364226225 + ... + 364500681.

It is an arithmetic number, because the mean of its divisors is an integer number (6508573860240).

Almost surely, 2^{100002100220021} is an apocalyptic number.

It is an amenable number.

100002100220021 is a deficient number, since it is larger than the sum of its proper divisors (4135081543819).

100002100220021 is a wasteful number, since it uses less digits than its factorization.

100002100220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357844.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100002100220021 its reverse (120022001200001), we get a palindrome (220024101420022).

The spelling of 100002100220021 in words is "one hundred trillion, two billion, one hundred million, two hundred twenty thousand, twenty-one".