21424001202 has 24 divisors (see below), whose sum is σ = 48137880336. Its totient is φ = 7141333572.

The previous prime is 21424001201. The next prime is 21424001213. The reversal of 21424001202 is 20210042412.

21424001202 is a `hidden beast` number, since 2 + 142 + 400 + 120 + 2 = 666.

It is a super-3 number, since 3×21424001202³ (a number of 32 digits) contains 333 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (21424001201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22040668 + ... + 22041639.

It is an arithmetic number, because the mean of its divisors is an integer number (2005745014).

Almost surely, 2^21424001202 is an apocalyptic number.

21424001202 is an abundant number, since it is smaller than the sum of its proper divisors (26713879134).

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

21424001202 is an equidigital number, since it uses as much as digits as its factorization.

21424001202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44082324 (or 44082312 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 21424001202 its reverse (20210042412), we get a palindrome (41634043614).

The spelling of 21424001202 in words is "twenty-one billion, four hundred twenty-four million, one thousand, two hundred two".