1213221222310 has 32 divisors (see below), whose sum is σ = 2205680803200. Its totient is φ = 480426825600.

The previous prime is 1213221222307. The next prime is 1213221222329. The reversal of 1213221222310 is 132221223121.

It is a super-2 number, since 2×1213221222310² (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 15 ways as a sum of consecutive naturals, for example, 9052771 + ... + 9185809.

It is an arithmetic number, because the mean of its divisors is an integer number (68927525100).

Almost surely, 2^{1213221222310} is an apocalyptic number.

1213221222310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213221222310 is a deficient number, since it is larger than the sum of its proper divisors (992459580890).

1213221222310 is a wasteful number, since it uses less digits than its factorization.

1213221222310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142176.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1213221222310 its reverse (132221223121), we get a palindrome (1345442445431).

The spelling of 1213221222310 in words is "one trillion, two hundred thirteen billion, two hundred twenty-one million, two hundred twenty-two thousand, three hundred ten".