121202200202 has 4 divisors (see below), whose sum is σ = 181803300306. Its totient is φ = 60601100100.

The previous prime is 121202200157. The next prime is 121202200237. The reversal of 121202200202 is 202002202121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 84238677121 + 36963523081 = 290239^2 + 192259^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30300550049 + ... + 30300550052.

Almost surely, 2^121202200202 is an apocalyptic number.

121202200202 is a deficient number, since it is larger than the sum of its proper divisors (60601100104).

121202200202 is an equidigital number, since it uses as much as digits as its factorization.

121202200202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60601100103.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 121202200202 its reverse (202002202121), we get a palindrome (323204402323).

The spelling of 121202200202 in words is "one hundred twenty-one billion, two hundred two million, two hundred thousand, two hundred two".