2251221336510 has 64 divisors (see below), whose sum is σ = 5535300976128. Its totient is φ = 585651878784.

The previous prime is 2251221336491. The next prime is 2251221336527. The reversal of 2251221336510 is 156331221522.

2251221336510 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1444 + ... + 2121896.

It is an arithmetic number, because the mean of its divisors is an integer number (86489077752).

Almost surely, 2^{2251221336510} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2251221336510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2767650488064).

2251221336510 is an abundant number, since it is smaller than the sum of its proper divisors (3284079639618).

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

2251221336510 is a wasteful number, since it uses less digits than its factorization.

2251221336510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121329.

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 2251221336510 in words is "two trillion, two hundred fifty-one billion, two hundred twenty-one million, three hundred thirty-six thousand, five hundred ten".