121202120002 has 4 divisors (see below), whose sum is σ = 181803180006. Its totient is φ = 60601060000.

The previous prime is 121202119877. The next prime is 121202120027. The reversal of 121202120002 is 200021202121.

It is a happy number.

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., 72846549801 + 48355570201 = 269901^2 + 219899^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30300529999 + ... + 30300530002.

Almost surely, 2^121202120002 is an apocalyptic number.

121202120002 is a deficient number, since it is larger than the sum of its proper divisors (60601060004).

121202120002 is an equidigital number, since it uses as much as digits as its factorization.

121202120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60601060003.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 121202120002 its reverse (200021202121), we get a palindrome (321223322123).

The spelling of 121202120002 in words is "one hundred twenty-one billion, two hundred two million, one hundred twenty thousand, two".