21002110202030 has 32 divisors (see below), whose sum is σ = 38057961533760. Its totient is φ = 8344374508800.

The previous prime is 21002110202011. The next prime is 21002110202033. The reversal of 21002110202030 is 3020201120012.

It is a happy number.

It is a super-2 number, since 2×21002110202030² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21002110201996 and 21002110202014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002110202033) 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, 14513522 + ... + 15894858.

It is an arithmetic number, because the mean of its divisors is an integer number (1189311297930).

Almost surely, 2^{21002110202030} is an apocalyptic number.

21002110202030 is a deficient number, since it is larger than the sum of its proper divisors (17055851331730).

21002110202030 is a wasteful number, since it uses less digits than its factorization.

21002110202030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391564.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21002110202030 its reverse (3020201120012), we get a palindrome (24022311322042).

The spelling of 21002110202030 in words is "twenty-one trillion, two billion, one hundred ten million, two hundred two thousand, thirty".