121020012203 has 16 divisors (see below), whose sum is σ = 127238126400. Its totient is φ = 114882932736.

The previous prime is 121020012187. The next prime is 121020012263. The reversal of 121020012203 is 302210020121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121020012203 - 2⁴ = 121020012187 is a prime.

It is a super-2 number, since 2×121020012203² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121020012263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4156151 + ... + 4185167.

It is an arithmetic number, because the mean of its divisors is an integer number (7952382900).

Almost surely, 2^121020012203 is an apocalyptic number.

121020012203 is a deficient number, since it is larger than the sum of its proper divisors (6218114197).

121020012203 is a wasteful number, since it uses less digits than its factorization.

121020012203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30406.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 121020012203 its reverse (302210020121), we get a palindrome (423230032324).

The spelling of 121020012203 in words is "one hundred twenty-one billion, twenty million, twelve thousand, two hundred three".