122121103 has 8 divisors (see below), whose sum is σ = 132141296. Its totient is φ = 112192920.

The previous prime is 122121089. The next prime is 122121107. The reversal of 122121103 is 301121221.

It is not a de Polignac number, because 122121103 - 2²¹ = 120023951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122121107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 578668 + ... + 578878.

It is an arithmetic number, because the mean of its divisors is an integer number (16517662).

Almost surely, 2^122121103 is an apocalyptic number.

122121103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

122121103 is a deficient number, since it is larger than the sum of its proper divisors (10020193).

122121103 is an frugal number, since it uses more digits than its factorization.

122121103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 122121103 is about 11050.8417326464. The cubic root of 122121103 is about 496.1316191091.

122121103 divided by its sum of digits (13) gives a cube (9393931 = 211³).

Adding to 122121103 its reverse (301121221), we get a palindrome (423242324).

The spelling of 122121103 in words is "one hundred twenty-two million, one hundred twenty-one thousand, one hundred three".