1211320023222 has 32 divisors (see below), whose sum is σ = 2488197940992. Its totient is φ = 392847737184.

The previous prime is 1211320023211. The next prime is 1211320023223. The reversal of 1211320023222 is 2223200231121.

It is a super-2 number, since 2×1211320023222² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211320023223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8673753 + ... + 8812299.

It is an arithmetic number, because the mean of its divisors is an integer number (77756185656).

Almost surely, 2^{1211320023222} is an apocalyptic number.

1211320023222 is an abundant number, since it is smaller than the sum of its proper divisors (1276877917770).

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

1211320023222 is a wasteful number, since it uses less digits than its factorization.

1211320023222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177972.

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

Adding to 1211320023222 its reverse (2223200231121), we get a palindrome (3434520254343).

The spelling of 1211320023222 in words is "one trillion, two hundred eleven billion, three hundred twenty million, twenty-three thousand, two hundred twenty-two".