212124054 has 16 divisors (see below), whose sum is σ = 425454192. Its totient is φ = 70507008.

The previous prime is 212124053. The next prime is 212124109. The reversal of 212124054 is 450421212.

It is a super-2 number, since 2×212124054² = 89993228570789832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212124054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212124053) 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, 47959 + ... + 52194.

It is an arithmetic number, because the mean of its divisors is an integer number (26590887).

Almost surely, 2^212124054 is an apocalyptic number.

212124054 is an abundant number, since it is smaller than the sum of its proper divisors (213330138).

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

212124054 is a wasteful number, since it uses less digits than its factorization.

212124054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100511.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 212124054 is about 14564.4791873929. The cubic root of 212124054 is about 596.3894782454.

Adding to 212124054 its reverse (450421212), we get a palindrome (662545266).

The spelling of 212124054 in words is "two hundred twelve million, one hundred twenty-four thousand, fifty-four".