1220121222103 has 32 divisors (see below), whose sum is σ = 1421861504000. Its totient is φ = 1025397356544.

The previous prime is 1220121222091. The next prime is 1220121222127. The reversal of 1220121222103 is 3012221210221.

It is a cyclic number.

It is not a de Polignac number, because 1220121222103 - 2¹⁷ = 1220121091031 is a prime.

It is a super-2 number, since 2×1220121222103² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220121222703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94437478 + ... + 94450396.

It is an arithmetic number, because the mean of its divisors is an integer number (44433172000).

Almost surely, 2^{1220121222103} is an apocalyptic number.

1220121222103 is a deficient number, since it is larger than the sum of its proper divisors (201740281897).

1220121222103 is a wasteful number, since it uses less digits than its factorization.

1220121222103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13919.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1220121222103 its reverse (3012221210221), we get a palindrome (4232342432324).

The spelling of 1220121222103 in words is "one trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred three".