2100022202021 has 4 divisors (see below), whose sum is σ = 2100567524544. Its totient is φ = 2099476879500.

The previous prime is 2100022202017. The next prime is 2100022202029. The reversal of 2100022202021 is 1202022200012.

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 not a de Polignac number, because 2100022202021 - 2² = 2100022202017 is a prime.

It is a super-2 number, since 2×2100022202021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100022201987 and 2100022202005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100022202029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272655485 + ... + 272663186.

It is an arithmetic number, because the mean of its divisors is an integer number (525141881136).

Almost surely, 2^{2100022202021} is an apocalyptic number.

It is an amenable number.

2100022202021 is a deficient number, since it is larger than the sum of its proper divisors (545322523).

2100022202021 is an equidigital number, since it uses as much as digits as its factorization.

2100022202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545322522.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2100022202021 its reverse (1202022200012), we get a palindrome (3302044402033).

The spelling of 2100022202021 in words is "two trillion, one hundred billion, twenty-two million, two hundred two thousand, twenty-one".