61217122022200 has 96 divisors (see below), whose sum is σ = 143441441816400. Its totient is φ = 24295815613440.

The previous prime is 61217122022171. The next prime is 61217122022201. The reversal of 61217122022200 is 222022171216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61217122022201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44836012 + ... + 46181188.

Almost surely, 2^{61217122022200} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61217122022200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71720720908200).

61217122022200 is an abundant number, since it is smaller than the sum of its proper divisors (82224319794200).

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

61217122022200 is a wasteful number, since it uses less digits than its factorization.

61217122022200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346969 (or 1346960 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

Adding to 61217122022200 its reverse (222022171216), we get a palindrome (61439144193416).

The spelling of 61217122022200 in words is "sixty-one trillion, two hundred seventeen billion, one hundred twenty-two million, twenty-two thousand, two hundred".