1221303210122 has 8 divisors (see below), whose sum is σ = 1832187231936. Its totient is φ = 610574132812.

The previous prime is 1221303210097. The next prime is 1221303210167. The reversal of 1221303210122 is 2210123031221.

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 = 1221303210094 and 1221303210103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38716418 + ... + 38747949.

It is an arithmetic number, because the mean of its divisors is an integer number (229023403992).

Almost surely, 2^{1221303210122} is an apocalyptic number.

1221303210122 is a deficient number, since it is larger than the sum of its proper divisors (610884021814).

1221303210122 is an equidigital number, since it uses as much as digits as its factorization.

1221303210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77472252.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1221303210122 its reverse (2210123031221), we get a palindrome (3431426241343).

The spelling of 1221303210122 in words is "one trillion, two hundred twenty-one billion, three hundred three million, two hundred ten thousand, one hundred twenty-two".