212211661152 has 48 divisors (see below), whose sum is σ = 576264432240. Its totient is φ = 68298004992.

The previous prime is 212211661139. The next prime is 212211661159. The reversal of 212211661152 is 251166112212.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212211661159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38109943 + ... + 38115510.

It is an arithmetic number, because the mean of its divisors is an integer number (12005509005).

Almost surely, 2^212211661152 is an apocalyptic number.

It is an amenable number.

212211661152 is an abundant number, since it is smaller than the sum of its proper divisors (364052771088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212211661152 is a wasteful number, since it uses less digits than its factorization.

212211661152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76225495 (or 76225487 counting only the distinct ones).

The product of its digits is 2880, while the sum is 30.

Adding to 212211661152 its reverse (251166112212), we get a palindrome (463377773364).

The spelling of 212211661152 in words is "two hundred twelve billion, two hundred eleven million, six hundred sixty-one thousand, one hundred fifty-two".