21214030000642 has 16 divisors (see below), whose sum is σ = 31886468838432. Its totient is φ = 10585212883200.

The previous prime is 21214030000531. The next prime is 21214030000643. The reversal of 21214030000642 is 24600003041212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21214030000643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5844517 + ... + 8751367.

It is an arithmetic number, because the mean of its divisors is an integer number (1992904302402).

Almost surely, 2^{21214030000642} is an apocalyptic number.

21214030000642 is a deficient number, since it is larger than the sum of its proper divisors (10672438837790).

21214030000642 is a wasteful number, since it uses less digits than its factorization.

21214030000642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914353.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21214030000642 its reverse (24600003041212), we get a palindrome (45814033041854).

The spelling of 21214030000642 in words is "twenty-one trillion, two hundred fourteen billion, thirty million, six hundred forty-two", and thus it is an aban number.