1021203402552 has 96 divisors (see below), whose sum is σ = 2775061380000. Its totient is φ = 339257237760.

The previous prime is 1021203402509. The next prime is 1021203402553. The reversal of 1021203402552 is 2552043021201.

1021203402552 is a `hidden beast` number, since 1 + 0 + 2 + 1 + 203 + 402 + 5 + 52 = 666.

It is a super-2 number, since 2×1021203402552² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021203402553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57006477 + ... + 57024387.

It is an arithmetic number, because the mean of its divisors is an integer number (28906889375).

Almost surely, 2^{1021203402552} is an apocalyptic number.

1021203402552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021203402552 is an abundant number, since it is smaller than the sum of its proper divisors (1753857977448).

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

1021203402552 is a wasteful number, since it uses less digits than its factorization.

1021203402552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20541 (or 20534 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 1021203402552 its reverse (2552043021201), we get a palindrome (3573246423753).

The spelling of 1021203402552 in words is "one trillion, twenty-one billion, two hundred three million, four hundred two thousand, five hundred fifty-two".