200121213002 has 4 divisors (see below), whose sum is σ = 300181819506. Its totient is φ = 100060606500.

The previous prime is 200121213001. The next prime is 200121213079. The reversal of 200121213002 is 200312121002.

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., 149491262881 + 50629950121 = 386641^2 + 225011^2 .

It is not an unprimeable number, because it can be changed into a prime (200121213001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50030303249 + ... + 50030303252.

Almost surely, 2^200121213002 is an apocalyptic number.

200121213002 is a deficient number, since it is larger than the sum of its proper divisors (100060606504).

200121213002 is a wasteful number, since it uses less digits than its factorization.

200121213002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100060606503.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 200121213002 its reverse (200312121002), we get a palindrome (400433334004).

The spelling of 200121213002 in words is "two hundred billion, one hundred twenty-one million, two hundred thirteen thousand, two".