21101410434434 has 32 divisors (see below), whose sum is σ = 34786882463616. Its totient is φ = 9520098670720.

The previous prime is 21101410434431. The next prime is 21101410434497. The reversal of 21101410434434 is 43443401410112.

It is a super-2 number, since 2×21101410434434² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21101410434434.

It is not an unprimeable number, because it can be changed into a prime (21101410434431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19525979 + ... + 20578305.

It is an arithmetic number, because the mean of its divisors is an integer number (1087090076988).

Almost surely, 2^{21101410434434} is an apocalyptic number.

21101410434434 is a deficient number, since it is larger than the sum of its proper divisors (13685472029182).

21101410434434 is a wasteful number, since it uses less digits than its factorization.

21101410434434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059130.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 21101410434434 its reverse (43443401410112), we get a palindrome (64544811844546).

The spelling of 21101410434434 in words is "twenty-one trillion, one hundred one billion, four hundred ten million, four hundred thirty-four thousand, four hundred thirty-four".