221212203043 has 6 divisors (see below), whose sum is σ = 239537474484. Its totient is φ = 204195879576.

The previous prime is 221212203041. The next prime is 221212203053. The reversal of 221212203043 is 340302212122.

It is not a de Polignac number, because 221212203043 - 2¹ = 221212203041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221212203041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 654473805 + ... + 654474142.

It is an arithmetic number, because the mean of its divisors is an integer number (39922912414).

Almost surely, 2^221212203043 is an apocalyptic number.

221212203043 is a deficient number, since it is larger than the sum of its proper divisors (18325271441).

221212203043 is a wasteful number, since it uses less digits than its factorization.

221212203043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308947973 (or 1308947960 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 221212203043 its reverse (340302212122), we get a palindrome (561514415165).

The spelling of 221212203043 in words is "two hundred twenty-one billion, two hundred twelve million, two hundred three thousand, forty-three".