21003012922210 has 32 divisors (see below), whose sum is σ = 41538987000000. Its totient is φ = 7582513488960.

The previous prime is 21003012922201. The next prime is 21003012922261. The reversal of 21003012922210 is 1222921030012.

It is a super-2 number, since 2×21003012922210² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 686806585 + ... + 686837164.

It is an arithmetic number, because the mean of its divisors is an integer number (1298093343750).

Almost surely, 2^{21003012922210} is an apocalyptic number.

21003012922210 is a deficient number, since it is larger than the sum of its proper divisors (20535974077790).

21003012922210 is a wasteful number, since it uses less digits than its factorization.

21003012922210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373643906.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 21003012922210 its reverse (1222921030012), we get a palindrome (22225933952222).

The spelling of 21003012922210 in words is "twenty-one trillion, three billion, twelve million, nine hundred twenty-two thousand, two hundred ten".