61310122200 has 144 divisors (see below), whose sum is σ = 207472379400. Its totient is φ = 16224499200.

The previous prime is 61310122199. The next prime is 61310122253. The reversal of 61310122200 is 222101316.

61310122200 is a `hidden beast` number, since 613 + 10 + 1 + 22 + 20 + 0 = 666.

61310122200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 105796 + ... + 365804.

Almost surely, 2^61310122200 is an apocalyptic number.

61310122200 is a gapful number since it is divisible by the number (60) 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 61310122200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103736189700).

61310122200 is an abundant number, since it is smaller than the sum of its proper divisors (146162257200).

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

61310122200 is a wasteful number, since it uses less digits than its factorization.

61310122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260162 (or 260150 counting only the distinct ones).

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

Adding to 61310122200 its reverse (222101316), we get a palindrome (61532223516).

The spelling of 61310122200 in words is "sixty-one billion, three hundred ten million, one hundred twenty-two thousand, two hundred".