212211823170064 has 45 divisors (see below), whose sum is σ = 422577480365607. Its totient is φ = 103237135385472.

The previous prime is 212211823169987. The next prime is 212211823170071. The reversal of 212211823170064 is 460071328112212.

The square root of 212211823170064 is 14567492.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 86355016707600 + 125856806462464 = 9292740^2 + 11218592^2 .

It is a super-3 number, since 3×212211823170064³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212211823169999 and 212211823170026.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2155939602 + ... + 2156038030.

Almost surely, 2^{212211823170064} is an apocalyptic number.

212211823170064 is the 14567492-nd square number.

It is an amenable number.

212211823170064 is a deficient number, since it is larger than the sum of its proper divisors (210365657195543).

212211823170064 is an frugal number, since it uses more digits than its factorization.

212211823170064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196940 (or 98468 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 212211823170064 in words is "two hundred twelve trillion, two hundred eleven billion, eight hundred twenty-three million, one hundred seventy thousand, sixty-four".