200121002022002 has 4 divisors (see below), whose sum is σ = 300181503033006. Its totient is φ = 100060501011000.

The previous prime is 200121002021989. The next prime is 200121002022037. The reversal of 200121002022002 is 200220200121002.

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., 183932699228041 + 16188302793961 = 13562179^2 + 4023469^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50030250505499 + ... + 50030250505502.

Almost surely, 2^{200121002022002} is an apocalyptic number.

200121002022002 is a deficient number, since it is larger than the sum of its proper divisors (100060501011004).

200121002022002 is a wasteful number, since it uses less digits than its factorization.

200121002022002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100060501011003.

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

Adding to 200121002022002 its reverse (200220200121002), we get a palindrome (400341202143004).

The spelling of 200121002022002 in words is "two hundred trillion, one hundred twenty-one billion, two million, twenty-two thousand, two".