21334343200042 has 16 divisors (see below), whose sum is σ = 33315875294760. Its totient is φ = 10233737212608.

The previous prime is 21334343200033. The next prime is 21334343200063. The reversal of 21334343200042 is 24000234343312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13297917650161 + 8036425549881 = 3646631^2 + 2834859^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21334343199977 and 21334343200013.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1171435173 + ... + 1171453384.

Almost surely, 2^{21334343200042} is an apocalyptic number.

21334343200042 is a deficient number, since it is larger than the sum of its proper divisors (11981532094718).

21334343200042 is a wasteful number, since it uses less digits than its factorization.

21334343200042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342888745.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 21334343200042 its reverse (24000234343312), we get a palindrome (45334577543354).

The spelling of 21334343200042 in words is "twenty-one trillion, three hundred thirty-four billion, three hundred forty-three million, two hundred thousand, forty-two".