1023122521345 has 32 divisors (see below), whose sum is σ = 1294573363200. Its totient is φ = 774095615424.

The previous prime is 1023122521327. The next prime is 1023122521403. The reversal of 1023122521345 is 5431252213201.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1023122521345 is a prime.

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, 163356684 + ... + 163362946.

It is an arithmetic number, because the mean of its divisors is an integer number (40455417600).

Almost surely, 2^{1023122521345} is an apocalyptic number.

It is an amenable number.

1023122521345 is a deficient number, since it is larger than the sum of its proper divisors (271450841855).

1023122521345 is a wasteful number, since it uses less digits than its factorization.

1023122521345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8949.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 1023122521345 its reverse (5431252213201), we get a palindrome (6454374734546).

The spelling of 1023122521345 in words is "one trillion, twenty-three billion, one hundred twenty-two million, five hundred twenty-one thousand, three hundred forty-five".