121202231020 has 48 divisors (see below), whose sum is σ = 278597043648. Its totient is φ = 44017954560.

The previous prime is 121202231009. The next prime is 121202231021. The reversal of 121202231020 is 20132202121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121202230985 and 121202231003.

It is not an unprimeable number, because it can be changed into a prime (121202231021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3805144 + ... + 3836863.

It is an arithmetic number, because the mean of its divisors is an integer number (5804105076).

Almost surely, 2^121202231020 is an apocalyptic number.

121202231020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202231020 is an abundant number, since it is smaller than the sum of its proper divisors (157394812628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121202231020 is a wasteful number, since it uses less digits than its factorization.

121202231020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7642090 (or 7642088 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 121202231020 its reverse (20132202121), we get a palindrome (141334433141).

The spelling of 121202231020 in words is "one hundred twenty-one billion, two hundred two million, two hundred thirty-one thousand, twenty".