21002122013230 has 32 divisors (see below), whose sum is σ = 38274913464480. Its totient is φ = 8296663386240.

The previous prime is 21002122013221. The next prime is 21002122013231. The reversal of 21002122013230 is 3231022120012.

It is a junction number, because it is equal to n+sod(n) for n = 21002122013198 and 21002122013207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002122013231) 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, 31046481 + ... + 31715740.

It is an arithmetic number, because the mean of its divisors is an integer number (1196091045765).

Almost surely, 2^{21002122013230} is an apocalyptic number.

21002122013230 is a deficient number, since it is larger than the sum of its proper divisors (17272791451250).

21002122013230 is a wasteful number, since it uses less digits than its factorization.

21002122013230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62762644.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21002122013230 its reverse (3231022120012), we get a palindrome (24233144133242).

The spelling of 21002122013230 in words is "twenty-one trillion, two billion, one hundred twenty-two million, thirteen thousand, two hundred thirty".