212402602643 has 16 divisors (see below), whose sum is σ = 264841315584. Its totient is φ = 165491220960.

The previous prime is 212402602639. The next prime is 212402602651. The reversal of 212402602643 is 346206204212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212402602643 - 2² = 212402602639 is a prime.

It is a super-2 number, since 2×212402602643² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212402602543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 623621 + ... + 902057.

It is an arithmetic number, because the mean of its divisors is an integer number (16552582224).

Almost surely, 2^212402602643 is an apocalyptic number.

212402602643 is a deficient number, since it is larger than the sum of its proper divisors (52438712941).

212402602643 is a wasteful number, since it uses less digits than its factorization.

212402602643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288362.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 212402602643 its reverse (346206204212), we get a palindrome (558608806855).

The spelling of 212402602643 in words is "two hundred twelve billion, four hundred two million, six hundred two thousand, six hundred forty-three".