1221120122102 has 8 divisors (see below), whose sum is σ = 1837115436936. Its totient is φ = 608748309792.

The previous prime is 1221120122081. The next prime is 1221120122107. The reversal of 1221120122102 is 2012210211221.

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

It is a super-2 number, since 2×1221120122102² (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 (1221120122107) 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, 905874788 + ... + 905876135.

It is an arithmetic number, because the mean of its divisors is an integer number (229639429617).

Almost surely, 2^{1221120122102} is an apocalyptic number.

1221120122102 is a deficient number, since it is larger than the sum of its proper divisors (615995314834).

1221120122102 is a wasteful number, since it uses less digits than its factorization.

1221120122102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811751262.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1221120122102 its reverse (2012210211221), we get a palindrome (3233330333323).

The spelling of 1221120122102 in words is "one trillion, two hundred twenty-one billion, one hundred twenty million, one hundred twenty-two thousand, one hundred two".