12211023220331 has 32 divisors (see below), whose sum is σ = 14015775869760. Its totient is φ = 10545243365376.

The previous prime is 12211023220313. The next prime is 12211023220373. The reversal of 12211023220331 is 13302232011221.

It is not a de Polignac number, because 12211023220331 - 2¹⁴ = 12211023203947 is a prime.

It is a super-2 number, since 2×12211023220331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12211023220297 and 12211023220306.

It is not an unprimeable number, because it can be changed into a prime (12211023220631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10391645 + ... + 11506881.

It is an arithmetic number, because the mean of its divisors is an integer number (437992995930).

Almost surely, 2^{12211023220331} is an apocalyptic number.

12211023220331 is a deficient number, since it is larger than the sum of its proper divisors (1804752649429).

12211023220331 is a wasteful number, since it uses less digits than its factorization.

12211023220331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115823.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 12211023220331 its reverse (13302232011221), we get a palindrome (25513255231552).

The spelling of 12211023220331 in words is "twelve trillion, two hundred eleven billion, twenty-three million, two hundred twenty thousand, three hundred thirty-one".