121121000202002 has 4 divisors (see below), whose sum is σ = 181681500303006. Its totient is φ = 60560500101000.

The previous prime is 121121000202001. The next prime is 121121000202029. The reversal of 121121000202002 is 200202000121121.

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., 100769253715321 + 20351746486681 = 10038389^2 + 4511291^2 .

It is not an unprimeable number, because it can be changed into a prime (121121000202001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30280250050499 + ... + 30280250050502.

Almost surely, 2^{121121000202002} is an apocalyptic number.

121121000202002 is a deficient number, since it is larger than the sum of its proper divisors (60560500101004).

121121000202002 is an equidigital number, since it uses as much as digits as its factorization.

121121000202002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60560500101003.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121121000202002 its reverse (200202000121121), we get a palindrome (321323000323123).

The spelling of 121121000202002 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred two thousand, two".