21020221101310 has 32 divisors (see below), whose sum is σ = 39142880652960. Its totient is φ = 8117785318272.

The previous prime is 21020221101307. The next prime is 21020221101337. The reversal of 21020221101310 is 1310112202012.

It is a super-3 number, since 3×21020221101310³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4786212 + ... + 8059048.

It is an arithmetic number, because the mean of its divisors is an integer number (1223215020405).

Almost surely, 2^{21020221101310} is an apocalyptic number.

21020221101310 is a deficient number, since it is larger than the sum of its proper divisors (18122659551650).

21020221101310 is a wasteful number, since it uses less digits than its factorization.

21020221101310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3295020.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21020221101310 its reverse (1310112202012), we get a palindrome (22330333303322).

The spelling of 21020221101310 in words is "twenty-one trillion, twenty billion, two hundred twenty-one million, one hundred one thousand, three hundred ten".