2100021222113 has 2 divisors, whose sum is σ = 2100021222114. Its totient is φ = 2100021222112.

The previous prime is 2100021222109. The next prime is 2100021222133. The reversal of 2100021222113 is 3112221200012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2084463150289 + 15558071824 = 1443767^2 + 124732^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100021222113 - 2² = 2100021222109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2100021222091 and 2100021222100.

It is not a weakly prime, because it can be changed into another prime (2100021222133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050010611056 + 1050010611057.

It is an arithmetic number, because the mean of its divisors is an integer number (1050010611057).

Almost surely, 2^{2100021222113} is an apocalyptic number.

It is an amenable number.

2100021222113 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100021222113 is an equidigital number, since it uses as much as digits as its factorization.

2100021222113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2100021222113 its reverse (3112221200012), we get a palindrome (5212242422125).

The spelling of 2100021222113 in words is "two trillion, one hundred billion, twenty-one million, two hundred twenty-two thousand, one hundred thirteen".