212401621272 has 32 divisors (see below), whose sum is σ = 562239586800. Its totient is φ = 66635802624.

The previous prime is 212401621259. The next prime is 212401621291. The reversal of 212401621272 is 272126104212.

It is a super-2 number, since 2×212401621272² (a number of 23 digits) contains 22 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260295697 + ... + 260296512.

Almost surely, 2^212401621272 is an apocalyptic number.

It is an amenable number.

212401621272 is an abundant number, since it is smaller than the sum of its proper divisors (349837965528).

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

212401621272 is a wasteful number, since it uses less digits than its factorization.

212401621272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520592235 (or 520592231 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

Adding to 212401621272 its reverse (272126104212), we get a palindrome (484527725484).

The spelling of 212401621272 in words is "two hundred twelve billion, four hundred one million, six hundred twenty-one thousand, two hundred seventy-two".