100220212112021 has 4 divisors (see below), whose sum is σ = 101488822392000. Its totient is φ = 98951601832044.

The previous prime is 100220212112003. The next prime is 100220212112077. The reversal of 100220212112021 is 120211212022001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100220212112021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220212112821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634305139871 + ... + 634305140028.

It is an arithmetic number, because the mean of its divisors is an integer number (25372205598000).

Almost surely, 2^{100220212112021} is an apocalyptic number.

It is an amenable number.

100220212112021 is a deficient number, since it is larger than the sum of its proper divisors (1268610279979).

100220212112021 is an equidigital number, since it uses as much as digits as its factorization.

100220212112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268610279978.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 100220212112021 its reverse (120211212022001), we get a palindrome (220431424134022).

The spelling of 100220212112021 in words is "one hundred trillion, two hundred twenty billion, two hundred twelve million, one hundred twelve thousand, twenty-one".