1221101120122 has 8 divisors (see below), whose sum is σ = 1972547963316. Its totient is φ = 563585132352.

The previous prime is 1221101120059. The next prime is 1221101120123. The reversal of 1221101120122 is 2210211011221.

It can be written as a sum of positive squares in 2 ways, for example, as 1220960910841 + 140209281 = 1104971^2 + 11841^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1221101120096 and 1221101120105.

It is not an unprimeable number, because it can be changed into a prime (1221101120123) 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, 23482713823 + ... + 23482713874.

Almost surely, 2^{1221101120122} is an apocalyptic number.

1221101120122 is a deficient number, since it is larger than the sum of its proper divisors (751446843194).

1221101120122 is a wasteful number, since it uses less digits than its factorization.

1221101120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46965427712.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1221101120122 its reverse (2210211011221), we get a palindrome (3431312131343).

The spelling of 1221101120122 in words is "one trillion, two hundred twenty-one billion, one hundred one million, one hundred twenty thousand, one hundred twenty-two".