221212020012103 has 2 divisors, whose sum is σ = 221212020012104. Its totient is φ = 221212020012102.

The previous prime is 221212020012091. The next prime is 221212020012199. The reversal of 221212020012103 is 301210020212122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221212020012103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221212020052103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110606010006051 + 110606010006052.

It is an arithmetic number, because the mean of its divisors is an integer number (110606010006052).

Almost surely, 2^{221212020012103} is an apocalyptic number.

221212020012103 is a deficient number, since it is larger than the sum of its proper divisors (1).

221212020012103 is an equidigital number, since it uses as much as digits as its factorization.

221212020012103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 221212020012103 its reverse (301210020212122), we get a palindrome (522422040224225).

The spelling of 221212020012103 in words is "two hundred twenty-one trillion, two hundred twelve billion, twenty million, twelve thousand, one hundred three".