212556622303156 has 12 divisors (see below), whose sum is σ = 374124228274692. Its totient is φ = 105663985653248.

The previous prime is 212556622303117. The next prime is 212556622303183. The reversal of 212556622303156 is 651303226655212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 156608705635600 + 55947916667556 = 12514340^2 + 7479834^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153581373805 + ... + 153581375188.

It is an arithmetic number, because the mean of its divisors is an integer number (31177019022891).

Almost surely, 2^{212556622303156} is an apocalyptic number.

It is an amenable number.

212556622303156 is a deficient number, since it is larger than the sum of its proper divisors (161567605971536).

212556622303156 is a wasteful number, since it uses less digits than its factorization.

212556622303156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307162749170 (or 307162749168 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 49.

Adding to 212556622303156 its reverse (651303226655212), we get a palindrome (863859848958368).

The spelling of 212556622303156 in words is "two hundred twelve trillion, five hundred fifty-six billion, six hundred twenty-two million, three hundred three thousand, one hundred fifty-six".