121221202202 has 8 divisors (see below), whose sum is σ = 182059950996. Its totient is φ = 60534551872.

The previous prime is 121221202169. The next prime is 121221202373. The reversal of 121221202202 is 202202122121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 118438534201 + 2782668001 = 344149^2 + 52751^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38022623 + ... + 38025810.

Almost surely, 2^121221202202 is an apocalyptic number.

121221202202 is a deficient number, since it is larger than the sum of its proper divisors (60838748794).

121221202202 is an equidigital number, since it uses as much as digits as its factorization.

121221202202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76049232.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 121221202202 its reverse (202202122121), we get a palindrome (323423324323).

The spelling of 121221202202 in words is "one hundred twenty-one billion, two hundred twenty-one million, two hundred two thousand, two hundred two".