51222101010 has 128 divisors (see below), whose sum is σ = 130188902400. Its totient is φ = 12872192256.

The previous prime is 51222101003. The next prime is 51222101011. The reversal of 51222101010 is 1010122215.

51222101010 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 (15).

It is not an unprimeable number, because it can be changed into a prime (51222101011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13054909 + ... + 13058831.

It is an arithmetic number, because the mean of its divisors is an integer number (1017100800).

Almost surely, 2^51222101010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51222101010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65094451200).

51222101010 is an abundant number, since it is smaller than the sum of its proper divisors (78966801390).

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

51222101010 is a wasteful number, since it uses less digits than its factorization.

51222101010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4232.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 51222101010 its reverse (1010122215), we get a palindrome (52232223225).

The spelling of 51222101010 in words is "fifty-one billion, two hundred twenty-two million, one hundred one thousand, ten".