21111212202219 has 6 divisors (see below), whose sum is σ = 30493973180996. Its totient is φ = 14074141468140.

The previous prime is 21111212202137. The next prime is 21111212202221. The reversal of 21111212202219 is 91220221211112.

21111212202219 is a `hidden beast` number, since 21 + 1 + 11 + 212 + 202 + 219 = 666.

It is not a de Polignac number, because 21111212202219 - 2¹⁹ = 21111211677931 is a prime.

It is a super-3 number, since 3×21111212202219³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21111212202192 and 21111212202201.

It is not an unprimeable number, because it can be changed into a prime (21111212202919) 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, 1172845122337 + ... + 1172845122354.

Almost surely, 2^{21111212202219} is an apocalyptic number.

21111212202219 is a deficient number, since it is larger than the sum of its proper divisors (9382760978777).

21111212202219 is a wasteful number, since it uses less digits than its factorization.

21111212202219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345690244697 (or 2345690244694 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The spelling of 21111212202219 in words is "twenty-one trillion, one hundred eleven billion, two hundred twelve million, two hundred two thousand, two hundred nineteen".