221211202014424 has 16 divisors (see below), whose sum is σ = 429073452183600. Its totient is φ = 106791614765472.

The previous prime is 221211202014391. The next prime is 221211202014431. The reversal of 221211202014424 is 424410202112122.

It is a junction number, because it is equal to n+sod(n) for n = 221211202014392 and 221211202014401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476748279972 + ... + 476748280435.

It is an arithmetic number, because the mean of its divisors is an integer number (26817090761475).

Almost surely, 2^{221211202014424} is an apocalyptic number.

It is an amenable number.

221211202014424 is a deficient number, since it is larger than the sum of its proper divisors (207862250169176).

221211202014424 is a wasteful number, since it uses less digits than its factorization.

221211202014424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953496560442 (or 953496560438 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

Adding to 221211202014424 its reverse (424410202112122), we get a palindrome (645621404126546).

The spelling of 221211202014424 in words is "two hundred twenty-one trillion, two hundred eleven billion, two hundred two million, fourteen thousand, four hundred twenty-four".