2122100020205 has 16 divisors (see below), whose sum is σ = 2787503169024. Its totient is φ = 1538078066880.

The previous prime is 2122100020169. The next prime is 2122100020207. The reversal of 2122100020205 is 5020200012212.

It is not a de Polignac number, because 2122100020205 - 2¹² = 2122100016109 is a prime.

It is a super-2 number, since 2×2122100020205² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122100020207) 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, 65826269 + ... + 65858498.

It is an arithmetic number, because the mean of its divisors is an integer number (174218948064).

Almost surely, 2^{2122100020205} is an apocalyptic number.

It is an amenable number.

2122100020205 is a deficient number, since it is larger than the sum of its proper divisors (665403148819).

2122100020205 is a wasteful number, since it uses less digits than its factorization.

2122100020205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131685076.

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 2122100020205 its reverse (5020200012212), we get a palindrome (7142300032417).

The spelling of 2122100020205 in words is "two trillion, one hundred twenty-two billion, one hundred million, twenty thousand, two hundred five".