1211122214320 has 40 divisors (see below), whose sum is σ = 2857886909424. Its totient is φ = 477218303232.

The previous prime is 1211122214299. The next prime is 1211122214321. The reversal of 1211122214320 is 234122211121.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1211122214291 and 1211122214300.

It is not an unprimeable number, because it can be changed into a prime (1211122214321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112972459 + ... + 112983178.

Almost surely, 2^{1211122214320} is an apocalyptic number.

1211122214320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211122214320 is an abundant number, since it is smaller than the sum of its proper divisors (1646764695104).

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

1211122214320 is a wasteful number, since it uses less digits than its factorization.

1211122214320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225955717 (or 225955711 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 1211122214320 its reverse (234122211121), we get a palindrome (1445244425441).

The spelling of 1211122214320 in words is "one trillion, two hundred eleven billion, one hundred twenty-two million, two hundred fourteen thousand, three hundred twenty".