12212776120 has 64 divisors (see below), whose sum is σ = 28384266240. Its totient is φ = 4724342400.

The previous prime is 12212776117. The next prime is 12212776127. The reversal of 12212776120 is 2167721221.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212776127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2779125 + ... + 2783515.

It is an arithmetic number, because the mean of its divisors is an integer number (443504160).

Almost surely, 2^12212776120 is an apocalyptic number.

12212776120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12212776120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14192133120).

12212776120 is an abundant number, since it is smaller than the sum of its proper divisors (16171490120).

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

12212776120 is a wasteful number, since it uses less digits than its factorization.

12212776120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6676 (or 6672 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The spelling of 12212776120 in words is "twelve billion, two hundred twelve million, seven hundred seventy-six thousand, one hundred twenty".