212144340302 has 16 divisors (see below), whose sum is σ = 321270296112. Its totient is φ = 105054734400.

The previous prime is 212144340277. The next prime is 212144340307. The reversal of 212144340302 is 203043441212.

It is a super-2 number, since 2×212144340302² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212144340307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754802 + ... + 997002.

It is an arithmetic number, because the mean of its divisors is an integer number (20079393507).

Almost surely, 2^212144340302 is an apocalyptic number.

212144340302 is a deficient number, since it is larger than the sum of its proper divisors (109125955810).

212144340302 is a wasteful number, since it uses less digits than its factorization.

212144340302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246403.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 212144340302 its reverse (203043441212), we get a palindrome (415187781514).

The spelling of 212144340302 in words is "two hundred twelve billion, one hundred forty-four million, three hundred forty thousand, three hundred two".