21442121020341 has 40 divisors (see below), whose sum is σ = 36619470317760. Its totient is φ = 12248351019072.

The previous prime is 21442121020319. The next prime is 21442121020349. The reversal of 21442121020341 is 14302012124412.

21442121020341 is a `hidden beast` number, since 2 + 1 + 4 + 4 + 212 + 102 + 0 + 341 = 666.

It is not a de Polignac number, because 21442121020341 - 2¹⁰ = 21442121019317 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21442121020349) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4998351 + ... + 8238188.

It is an arithmetic number, because the mean of its divisors is an integer number (915486757944).

Almost surely, 2^{21442121020341} is an apocalyptic number.

21442121020341 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21442121020341 is a deficient number, since it is larger than the sum of its proper divisors (15177349297419).

21442121020341 is a wasteful number, since it uses less digits than its factorization.

21442121020341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13239415 (or 13239406 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 21442121020341 its reverse (14302012124412), we get a palindrome (35744133144753).

The spelling of 21442121020341 in words is "twenty-one trillion, four hundred forty-two billion, one hundred twenty-one million, twenty thousand, three hundred forty-one".