202101021002 has 8 divisors (see below), whose sum is σ = 303226266756. Its totient is φ = 101025598752.

The previous prime is 202101020987. The next prime is 202101021013. The reversal of 202101021002 is 200120101202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 202013392681 + 87628321 = 449459^2 + 9361^2 .

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, 12445733 + ... + 12461960.

Almost surely, 2^202101021002 is an apocalyptic number.

202101021002 is a deficient number, since it is larger than the sum of its proper divisors (101125245754).

202101021002 is a wasteful number, since it uses less digits than its factorization.

202101021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24911752.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 202101021002 its reverse (200120101202), we get a palindrome (402221122204).

The spelling of 202101021002 in words is "two hundred two billion, one hundred one million, twenty-one thousand, two".