21111434310414 has 16 divisors (see below), whose sum is σ = 48254706995328. Its totient is φ = 6031838374392.

The previous prime is 21111434310391. The next prime is 21111434310433. The reversal of 21111434310414 is 41401343411112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251326598892 + ... + 251326598975.

It is an arithmetic number, because the mean of its divisors is an integer number (3015919187208).

Almost surely, 2^{21111434310414} is an apocalyptic number.

21111434310414 is an abundant number, since it is smaller than the sum of its proper divisors (27143272684914).

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

21111434310414 is a wasteful number, since it uses less digits than its factorization.

21111434310414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502653197879.

The product of its (nonzero) digits is 4608, while the sum is 30.

Adding to 21111434310414 its reverse (41401343411112), we get a palindrome (62512777721526).

The spelling of 21111434310414 in words is "twenty-one trillion, one hundred eleven billion, four hundred thirty-four million, three hundred ten thousand, four hundred fourteen".