1052121052345 has 16 divisors (see below), whose sum is σ = 1388167170048. Its totient is φ = 759153911040.

The previous prime is 1052121052343. The next prime is 1052121052379. The reversal of 1052121052345 is 5432501212501.

It is not a de Polignac number, because 1052121052345 - 2¹ = 1052121052343 is a prime.

It is a super-2 number, since 2×1052121052345² (a number of 25 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1052121052343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75305904 + ... + 75319873.

It is an arithmetic number, because the mean of its divisors is an integer number (86760448128).

Almost surely, 2^{1052121052345} is an apocalyptic number.

It is an amenable number.

1052121052345 is a deficient number, since it is larger than the sum of its proper divisors (336046117703).

1052121052345 is a wasteful number, since it uses less digits than its factorization.

1052121052345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150625920.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 1052121052345 its reverse (5432501212501), we get a palindrome (6484622264846).

The spelling of 1052121052345 in words is "one trillion, fifty-two billion, one hundred twenty-one million, fifty-two thousand, three hundred forty-five".