202120010002 has 8 divisors (see below), whose sum is σ = 303533786556. Its totient is φ = 100942081152.

The previous prime is 202120009957. The next prime is 202120010009. The reversal of 202120010002 is 200010021202.

It can be written as a sum of positive squares in 2 ways, for example, as 201968449281 + 151560721 = 449409^2 + 12311^2 .

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

It is not an unprimeable number, because it can be changed into a prime (202120010009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58959783 + ... + 58963210.

Almost surely, 2^202120010002 is an apocalyptic number.

202120010002 is a deficient number, since it is larger than the sum of its proper divisors (101413776554).

202120010002 is a wasteful number, since it uses less digits than its factorization.

202120010002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117923852.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 202120010002 its reverse (200010021202), we get a palindrome (402130031204).

The spelling of 202120010002 in words is "two hundred two billion, one hundred twenty million, ten thousand, two".