212222142543445 has 16 divisors (see below), whose sum is σ = 268395797946240. Its totient is φ = 160646610982464.

The previous prime is 212222142543373. The next prime is 212222142543457. The reversal of 212222142543445 is 544345241222212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212222142543445 is a prime.

It is a super-3 number, since 3×212222142543445³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1357101214 + ... + 1357257583.

It is an arithmetic number, because the mean of its divisors is an integer number (16774737371640).

Almost surely, 2^{212222142543445} is an apocalyptic number.

It is an amenable number.

212222142543445 is a deficient number, since it is larger than the sum of its proper divisors (56173655402795).

212222142543445 is a wasteful number, since it uses less digits than its factorization.

212222142543445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2714359644.

The product of its digits is 1228800, while the sum is 43.

Adding to 212222142543445 its reverse (544345241222212), we get a palindrome (756567383765657).

The spelling of 212222142543445 in words is "two hundred twelve trillion, two hundred twenty-two billion, one hundred forty-two million, five hundred forty-three thousand, four hundred forty-five".