1222100001525 has 48 divisors (see below), whose sum is σ = 2270571924096. Its totient is φ = 575490558720.

The previous prime is 1222100001523. The next prime is 1222100001541. The reversal of 1222100001525 is 5251000012221.

It is not a de Polignac number, because 1222100001525 - 2¹ = 1222100001523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222100001523) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27226182 + ... + 27271031.

It is an arithmetic number, because the mean of its divisors is an integer number (47303581752).

Almost surely, 2^{1222100001525} is an apocalyptic number.

1222100001525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1222100001525 is a deficient number, since it is larger than the sum of its proper divisors (1048471922571).

1222100001525 is a wasteful number, since it uses less digits than its factorization.

1222100001525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54497262 (or 54497257 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 1222100001525 its reverse (5251000012221), we get a palindrome (6473100013746).

The spelling of 1222100001525 in words is "one trillion, two hundred twenty-two billion, one hundred million, one thousand, five hundred twenty-five".