1521054222222 has 16 divisors (see below), whose sum is σ = 3042129578832. Its totient is φ = 507014551680.

The previous prime is 1521054222217. The next prime is 1521054222253. The reversal of 1521054222222 is 2222224501251.

It is a self number, because there is not a number n which added to its sum of digits gives 1521054222222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147318 + ... + 1750374.

It is an arithmetic number, because the mean of its divisors is an integer number (190133098677).

Almost surely, 2^{1521054222222} is an apocalyptic number.

1521054222222 is an abundant number, since it is smaller than the sum of its proper divisors (1521075356610).

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

1521054222222 is a wasteful number, since it uses less digits than its factorization.

1521054222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761203.

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 1521054222222 its reverse (2222224501251), we get a palindrome (3743278723473).

The spelling of 1521054222222 in words is "one trillion, five hundred twenty-one billion, fifty-four million, two hundred twenty-two thousand, two hundred twenty-two".