1222214367761 has 4 divisors (see below), whose sum is σ = 1222490828724. Its totient is φ = 1221937906800.

The previous prime is 1222214367749. The next prime is 1222214367809. The reversal of 1222214367761 is 1677634122221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 827679633361 + 394534734400 = 909769^2 + 628120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222214367761 is a prime.

It is a super-2 number, since 2×1222214367761² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222214367961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138223850 + ... + 138232691.

It is an arithmetic number, because the mean of its divisors is an integer number (305622707181).

Almost surely, 2^{1222214367761} is an apocalyptic number.

It is an amenable number.

1222214367761 is a deficient number, since it is larger than the sum of its proper divisors (276460963).

1222214367761 is an equidigital number, since it uses as much as digits as its factorization.

1222214367761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276460962.

The product of its digits is 338688, while the sum is 44.

Adding to 1222214367761 its reverse (1677634122221), we get a palindrome (2899848489982).

The spelling of 1222214367761 in words is "one trillion, two hundred twenty-two billion, two hundred fourteen million, three hundred sixty-seven thousand, seven hundred sixty-one".