21221001130310 has 32 divisors (see below), whose sum is σ = 38371162976640. Its totient is φ = 8449893695488.

The previous prime is 21221001130243. The next prime is 21221001130337. The reversal of 21221001130310 is 1303110012212.

It is a super-2 number, since 2×21221001130310² (a number of 27 digits) contains 22 as substring.

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, 8387654 + ... + 10620486.

It is an arithmetic number, because the mean of its divisors is an integer number (1199098843020).

Almost surely, 2^{21221001130310} is an apocalyptic number.

21221001130310 is a deficient number, since it is larger than the sum of its proper divisors (17150161846330).

21221001130310 is a wasteful number, since it uses less digits than its factorization.

21221001130310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237152.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21221001130310 its reverse (1303110012212), we get a palindrome (22524111142522).

The spelling of 21221001130310 in words is "twenty-one trillion, two hundred twenty-one billion, one million, one hundred thirty thousand, three hundred ten".