1021153235052 has 96 divisors (see below), whose sum is σ = 2664284071680. Its totient is φ = 302511697920.

The previous prime is 1021153235021. The next prime is 1021153235099. The reversal of 1021153235052 is 2505323511201.

It is a super-2 number, since 2×1021153235052² (a number of 25 digits) contains 22 as substring.

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, 760852 + ... + 1619012.

It is an arithmetic number, because the mean of its divisors is an integer number (27752959080).

Almost surely, 2^{1021153235052} is an apocalyptic number.

1021153235052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021153235052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1332142035840).

1021153235052 is an abundant number, since it is smaller than the sum of its proper divisors (1643130836628).

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

1021153235052 is a wasteful number, since it uses less digits than its factorization.

1021153235052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858511 (or 858509 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 1021153235052 its reverse (2505323511201), we get a palindrome (3526476746253).

The spelling of 1021153235052 in words is "one trillion, twenty-one billion, one hundred fifty-three million, two hundred thirty-five thousand, fifty-two".