1320222212331 has 16 divisors (see below), whose sum is σ = 1982269129728. Its totient is φ = 774323877600.

The previous prime is 1320222212303. The next prime is 1320222212341. The reversal of 1320222212331 is 1332122220231.

It is not a de Polignac number, because 1320222212331 - 2⁷ = 1320222212203 is a prime.

It is a super-2 number, since 2×1320222212331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1320222212341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645268876 + ... + 645270921.

It is an arithmetic number, because the mean of its divisors is an integer number (123891820608).

Almost surely, 2^{1320222212331} is an apocalyptic number.

1320222212331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1320222212331 is a deficient number, since it is larger than the sum of its proper divisors (662046917397).

1320222212331 is a wasteful number, since it uses less digits than its factorization.

1320222212331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290539842.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1320222212331 its reverse (1332122220231), we get a palindrome (2652344432562).

The spelling of 1320222212331 in words is "one trillion, three hundred twenty billion, two hundred twenty-two million, two hundred twelve thousand, three hundred thirty-one".