2221021223310 has 64 divisors (see below), whose sum is σ = 5478665016384. Its totient is φ = 575828352000.

The previous prime is 2221021223297. The next prime is 2221021223327. The reversal of 2221021223310 is 133221201222.

It is a super-2 number, since 2×2221021223310² (a number of 25 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 31 ways as a sum of consecutive naturals, for example, 708960 + ... + 2223660.

It is an arithmetic number, because the mean of its divisors is an integer number (85604140881).

Almost surely, 2^{2221021223310} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221021223310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2739332508192).

2221021223310 is an abundant number, since it is smaller than the sum of its proper divisors (3257643793074).

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

2221021223310 is a wasteful number, since it uses less digits than its factorization.

2221021223310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516069.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2221021223310 its reverse (133221201222), we get a palindrome (2354242424532).

The spelling of 2221021223310 in words is "two trillion, two hundred twenty-one billion, twenty-one million, two hundred twenty-three thousand, three hundred ten".