21404202101230 has 64 divisors (see below), whose sum is σ = 41896940940288. Its totient is φ = 7825939107840.

The previous prime is 21404202101221. The next prime is 21404202101239. The reversal of 21404202101230 is 3210120240412.

It is an interprime number because it is at equal distance from previous prime (21404202101221) and next prime (21404202101239).

It is a super-4 number, since 4×21404202101230⁴ (a number of 54 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21404202101239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15297810 + ... + 16638250.

It is an arithmetic number, because the mean of its divisors is an integer number (654639702192).

Almost surely, 2^{21404202101230} is an apocalyptic number.

21404202101230 is a deficient number, since it is larger than the sum of its proper divisors (20492738839058).

21404202101230 is a wasteful number, since it uses less digits than its factorization.

21404202101230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341661.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21404202101230 its reverse (3210120240412), we get a palindrome (24614322341642).

The spelling of 21404202101230 in words is "twenty-one trillion, four hundred four billion, two hundred two million, one hundred one thousand, two hundred thirty".