21442101154340 has 48 divisors (see below), whose sum is σ = 47470563084672. Its totient is φ = 8119357694976.

The previous prime is 21442101154337. The next prime is 21442101154343. The reversal of 21442101154340 is 4345110124412.

It is an interprime number because it is at equal distance from previous prime (21442101154337) and next prime (21442101154343).

It is a junction number, because it is equal to n+sod(n) for n = 21442101154297 and 21442101154306.

It is not an unprimeable number, because it can be changed into a prime (21442101154343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240229934 + ... + 240319173.

It is an arithmetic number, because the mean of its divisors is an integer number (988970064264).

Almost surely, 2^{21442101154340} is an apocalyptic number.

21442101154340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21442101154340 is an abundant number, since it is smaller than the sum of its proper divisors (26028461930332).

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

21442101154340 is a wasteful number, since it uses less digits than its factorization.

21442101154340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480549236 (or 480549234 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

Adding to 21442101154340 its reverse (4345110124412), we get a palindrome (25787211278752).

The spelling of 21442101154340 in words is "twenty-one trillion, four hundred forty-two billion, one hundred one million, one hundred fifty-four thousand, three hundred forty".