212026165556 has 12 divisors (see below), whose sum is σ = 373190564292. Its totient is φ = 105400290048.

The previous prime is 212026165541. The next prime is 212026165573. The reversal of 212026165556 is 655561620212.

It can be written as a sum of positive squares in 2 ways, for example, as 134480624656 + 77545540900 = 366716^2 + 278470^2 .

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, 153197405 + ... + 153198788.

It is an arithmetic number, because the mean of its divisors is an integer number (31099213691).

Almost surely, 2^212026165556 is an apocalyptic number.

It is an amenable number.

212026165556 is a deficient number, since it is larger than the sum of its proper divisors (161164398736).

212026165556 is a wasteful number, since it uses less digits than its factorization.

212026165556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306396370 (or 306396368 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

Adding to 212026165556 its reverse (655561620212), we get a palindrome (867587785768).

The spelling of 212026165556 in words is "two hundred twelve billion, twenty-six million, one hundred sixty-five thousand, five hundred fifty-six".