212221101300 has 288 divisors, whose sum is σ = 667235210880. Its totient is φ = 51769497600.

The previous prime is 212221101299. The next prime is 212221101341. The reversal of 212221101300 is 3101122212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 212221101300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 261677895 + ... + 261678705.

Almost surely, 2^212221101300 is an apocalyptic number.

212221101300 is a gapful number since it is divisible by the number (20) 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 212221101300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333617605440).

212221101300 is an abundant number, since it is smaller than the sum of its proper divisors (455014109580).

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

212221101300 is a wasteful number, since it uses less digits than its factorization.

212221101300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363 (or 1356 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 212221101300 its reverse (3101122212), we get a palindrome (215322223512).

The spelling of 212221101300 in words is "two hundred twelve billion, two hundred twenty-one million, one hundred one thousand, three hundred".