212401621258 has 4 divisors (see below), whose sum is σ = 318602431890. Its totient is φ = 106200810628.

The previous prime is 212401621213. The next prime is 212401621259. The reversal of 212401621258 is 852126104212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 180741468769 + 31660152489 = 425137^2 + 177933^2 .

It is a super-2 number, since 2×212401621258² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212401621259) 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 as a sum of consecutive naturals, namely, 53100405313 + ... + 53100405316.

Almost surely, 2^212401621258 is an apocalyptic number.

212401621258 is a deficient number, since it is larger than the sum of its proper divisors (106200810632).

212401621258 is a wasteful number, since it uses less digits than its factorization.

212401621258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106200810631.

The product of its (nonzero) digits is 15360, while the sum is 34.

The spelling of 212401621258 in words is "two hundred twelve billion, four hundred one million, six hundred twenty-one thousand, two hundred fifty-eight".