121000021202 has 24 divisors (see below), whose sum is σ = 194640252156. Its totient is φ = 56220313344.

The previous prime is 121000021199. The next prime is 121000021213. The reversal of 121000021202 is 202120000121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 117498813961 + 3501207241 = 342781^2 + 59171^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 72923 + ... + 497310.

Almost surely, 2^121000021202 is an apocalyptic number.

121000021202 is a deficient number, since it is larger than the sum of its proper divisors (73640230954).

121000021202 is an equidigital number, since it uses as much as digits as its factorization.

121000021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570410 (or 570331 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 121000021202 its reverse (202120000121), we get a palindrome (323120021323).

The spelling of 121000021202 in words is "one hundred twenty-one billion, twenty-one thousand, two hundred two".