201002121010 has 16 divisors (see below), whose sum is σ = 365386035672. Its totient is φ = 79604800000.

The previous prime is 201002120993. The next prime is 201002121011. The reversal of 201002121010 is 10121200102.

It can be written as a sum of positive squares in 4 ways, for example, as 200997098929 + 5022081 = 448327^2 + 2241^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (201002121011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99504991 + ... + 99507010.

Almost surely, 2^201002121010 is an apocalyptic number.

201002121010 is a deficient number, since it is larger than the sum of its proper divisors (164383914662).

201002121010 is a wasteful number, since it uses less digits than its factorization.

201002121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199012109.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 201002121010 its reverse (10121200102), we get a palindrome (211123321112).

The spelling of 201002121010 in words is "two hundred one billion, two million, one hundred twenty-one thousand, ten".