1222021522525 has 12 divisors (see below), whose sum is σ = 1550546379712. Its totient is φ = 954881933040.

The previous prime is 1222021522523. The next prime is 1222021522543. The reversal of 1222021522525 is 5252251202221.

It is not a de Polignac number, because 1222021522525 - 2¹ = 1222021522523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222021522523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 568381029 + ... + 568383178.

Almost surely, 2^{1222021522525} is an apocalyptic number.

It is an amenable number.

1222021522525 is a deficient number, since it is larger than the sum of its proper divisors (328524857187).

1222021522525 is a wasteful number, since it uses less digits than its factorization.

1222021522525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136764260 (or 1136764255 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 1222021522525 its reverse (5252251202221), we get a palindrome (6474272724746).

The spelling of 1222021522525 in words is "one trillion, two hundred twenty-two billion, twenty-one million, five hundred twenty-two thousand, five hundred twenty-five".