21420010231422 has 64 divisors (see below), whose sum is σ = 47794721448960. Its totient is φ = 6345295632000.

The previous prime is 21420010231409. The next prime is 21420010231447. The reversal of 21420010231422 is 22413201002412.

It is a super-2 number, since 2×21420010231422² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21420010231392 and 21420010231401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19810873 + ... + 20864100.

It is an arithmetic number, because the mean of its divisors is an integer number (746792522640).

Almost surely, 2^{21420010231422} is an apocalyptic number.

21420010231422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21420010231422 is an abundant number, since it is smaller than the sum of its proper divisors (26374711217538).

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

21420010231422 is a wasteful number, since it uses less digits than its factorization.

21420010231422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40675169.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21420010231422 its reverse (22413201002412), we get a palindrome (43833211233834).

The spelling of 21420010231422 in words is "twenty-one trillion, four hundred twenty billion, ten million, two hundred thirty-one thousand, four hundred twenty-two".