212476229890 has 16 divisors (see below), whose sum is σ = 385965997560. Its totient is φ = 84210762240.

The previous prime is 212476229887. The next prime is 212476229929. The reversal of 212476229890 is 98922674212.

It can be written as a sum of positive squares in 4 ways, for example, as 200710272049 + 11765957841 = 448007^2 + 108471^2 .

It is a super-2 number, since 2×212476229890² (a number of 23 digits) contains 22 as substring.

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, 97465071 + ... + 97467250.

Almost surely, 2^212476229890 is an apocalyptic number.

212476229890 is a deficient number, since it is larger than the sum of its proper divisors (173489767670).

212476229890 is a wasteful number, since it uses less digits than its factorization.

212476229890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194932437.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 212476229890 in words is "two hundred twelve billion, four hundred seventy-six million, two hundred twenty-nine thousand, eight hundred ninety".