221211114630 has 144 divisors (see below), whose sum is σ = 604383513552. Its totient is φ = 51777017600.

The previous prime is 221211114629. The next prime is 221211114697. The reversal of 221211114630 is 36411112122.

It is a self number, because there is not a number n which added to its sum of digits gives 221211114630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3016600 + ... + 3089060.

It is an arithmetic number, because the mean of its divisors is an integer number (4197107733).

Almost surely, 2^221211114630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221211114630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302191756776).

221211114630 is an abundant number, since it is smaller than the sum of its proper divisors (383172398922).

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

221211114630 is a wasteful number, since it uses less digits than its factorization.

221211114630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72551 (or 72511 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 221211114630 its reverse (36411112122), we get a palindrome (257622226752).

The spelling of 221211114630 in words is "two hundred twenty-one billion, two hundred eleven million, one hundred fourteen thousand, six hundred thirty".