201220121002 has 8 divisors (see below), whose sum is σ = 319584898116. Its totient is φ = 94691821632.

The previous prime is 201220120991. The next prime is 201220121023. The reversal of 201220121002 is 200121022102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 196053242841 + 5166878161 = 442779^2 + 71881^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2959119393 + ... + 2959119460.

Almost surely, 2^201220121002 is an apocalyptic number.

201220121002 is a deficient number, since it is larger than the sum of its proper divisors (118364777114).

201220121002 is a wasteful number, since it uses less digits than its factorization.

201220121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5918238872.

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

Adding to 201220121002 its reverse (200121022102), we get a palindrome (401341143104).

The spelling of 201220121002 in words is "two hundred one billion, two hundred twenty million, one hundred twenty-one thousand, two".