21221023021030 has 48 divisors (see below), whose sum is σ = 44996682323520. Its totient is φ = 7183680835968.

The previous prime is 21221023021001. The next prime is 21221023021043. The reversal of 21221023021030 is 3012032012212.

It is a super-3 number, since 3×21221023021030³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21221023020989 and 21221023021007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 274063887 + ... + 274141306.

It is an arithmetic number, because the mean of its divisors is an integer number (937430881740).

Almost surely, 2^{21221023021030} is an apocalyptic number.

21221023021030 is an abundant number, since it is smaller than the sum of its proper divisors (23775659302490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21221023021030 is a wasteful number, since it uses less digits than its factorization.

21221023021030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548205293 (or 548205286 counting only the distinct ones).

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

Adding to 21221023021030 its reverse (3012032012212), we get a palindrome (24233055033242).

The spelling of 21221023021030 in words is "twenty-one trillion, two hundred twenty-one billion, twenty-three million, twenty-one thousand, thirty".