1220121002122 has 8 divisors (see below), whose sum is σ = 1996561639872. Its totient is φ = 554600455500.

The previous prime is 1220121002119. The next prime is 1220121002147. The reversal of 1220121002122 is 2212001210221.

It is a happy number.

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 = 1220121002096 and 1220121002105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27730022754 + ... + 27730022797.

It is an arithmetic number, because the mean of its divisors is an integer number (249570204984).

Almost surely, 2^{1220121002122} is an apocalyptic number.

1220121002122 is a deficient number, since it is larger than the sum of its proper divisors (776440637750).

1220121002122 is a wasteful number, since it uses less digits than its factorization.

1220121002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55460045564.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1220121002122 its reverse (2212001210221), we get a palindrome (3432122212343).

The spelling of 1220121002122 in words is "one trillion, two hundred twenty billion, one hundred twenty-one million, two thousand, one hundred twenty-two".