21003300121302 has 24 divisors (see below), whose sum is σ = 46365775741584. Its totient is φ = 6869003812944.

The previous prime is 21003300121277. The next prime is 21003300121351. The reversal of 21003300121302 is 20312100330012.

21003300121302 is a `hidden beast` number, since 2 + 10 + 0 + 330 + 0 + 1 + 21 + 302 = 666.

It is a super-2 number, since 2×21003300121302² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 11008017978 + ... + 11008019885.

It is an arithmetic number, because the mean of its divisors is an integer number (1931907322566).

Almost surely, 2^{21003300121302} is an apocalyptic number.

21003300121302 is an abundant number, since it is smaller than the sum of its proper divisors (25362475620282).

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

21003300121302 is a wasteful number, since it uses less digits than its factorization.

21003300121302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22016037924 (or 22016037921 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21003300121302 its reverse (20312100330012), we get a palindrome (41315400451314).

The spelling of 21003300121302 in words is "twenty-one trillion, three billion, three hundred million, one hundred twenty-one thousand, three hundred two".