10021552230402 has 80 divisors (see below), whose sum is σ = 22832362476792. Its totient is φ = 3284525998080.

The previous prime is 10021552230397. The next prime is 10021552230407. The reversal of 10021552230402 is 20403225512001.

10021552230402 is a `hidden beast` number, since 1 + 0 + 0 + 21 + 5 + 5 + 2 + 230 + 402 = 666.

It is an interprime number because it is at equal distance from previous prime (10021552230397) and next prime (10021552230407).

It can be written as a sum of positive squares in 4 ways, for example, as 7278292104561 + 2743260125841 = 2697831^2 + 1656279^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (10021552230407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 26423938 + ... + 26800514.

Almost surely, 2^{10021552230402} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10021552230402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11416181238396).

10021552230402 is an abundant number, since it is smaller than the sum of its proper divisors (12810810246390).

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

10021552230402 is a wasteful number, since it uses less digits than its factorization.

10021552230402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379345 (or 379336 counting only the distinct ones).

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

Adding to 10021552230402 its reverse (20403225512001), we get a palindrome (30424777742403).

The spelling of 10021552230402 in words is "ten trillion, twenty-one billion, five hundred fifty-two million, two hundred thirty thousand, four hundred two".