202111223130 has 192 divisors, whose sum is σ = 554113018368. Its totient is φ = 51050373120.

The previous prime is 202111223123. The next prime is 202111223137. The reversal of 202111223130 is 31322111202.

202111223130 is a `hidden beast` number, since 20 + 211 + 122 + 313 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (202111223123) and next prime (202111223137).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (202111223137) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 30203085 + ... + 30209775.

It is an arithmetic number, because the mean of its divisors is an integer number (2886005304).

Almost surely, 2^202111223130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202111223130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277056509184).

202111223130 is an abundant number, since it is smaller than the sum of its proper divisors (352001795238).

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

202111223130 is a wasteful number, since it uses less digits than its factorization.

202111223130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6981 (or 6978 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 202111223130 its reverse (31322111202), we get a palindrome (233433334332).

The spelling of 202111223130 in words is "two hundred two billion, one hundred eleven million, two hundred twenty-three thousand, one hundred thirty".