212142543100 has 36 divisors (see below), whose sum is σ = 460432065184. Its totient is φ = 84841764480.

The previous prime is 212142543089. The next prime is 212142543121. The reversal of 212142543100 is 1345241212.

212142543100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212142543100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 376864 + ... + 752536.

Almost surely, 2^212142543100 is an apocalyptic number.

212142543100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212142543100 is an abundant number, since it is smaller than the sum of its proper divisors (248289522084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212142543100 is a wasteful number, since it uses less digits than its factorization.

212142543100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381334 (or 381327 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 212142543100 its reverse (1345241212), we get a palindrome (213487784312).

The spelling of 212142543100 in words is "two hundred twelve billion, one hundred forty-two million, five hundred forty-three thousand, one hundred".