221412564219 has 16 divisors (see below), whose sum is σ = 368062444800. Its totient is φ = 115019513760.

The previous prime is 221412564167. The next prime is 221412564299. The reversal of 221412564219 is 912465214122.

It is a happy number.

It is not a de Polignac number, because 221412564219 - 2⁹ = 221412563707 is a prime.

It is a super-2 number, since 2×221412564219² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221412564299) 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, 479247744 + ... + 479248205.

It is an arithmetic number, because the mean of its divisors is an integer number (23003902800).

Almost surely, 2^221412564219 is an apocalyptic number.

221412564219 is a deficient number, since it is larger than the sum of its proper divisors (146649880581).

221412564219 is a wasteful number, since it uses less digits than its factorization.

221412564219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958495970.

The product of its digits is 69120, while the sum is 39.

It can be divided in two parts, 221412 and 564219, that added together give a triangular number (785631 = T₁₂₅₃).

The spelling of 221412564219 in words is "two hundred twenty-one billion, four hundred twelve million, five hundred sixty-four thousand, two hundred nineteen".