201021212010 has 64 divisors (see below), whose sum is σ = 521568604800. Its totient is φ = 49411752192.

The previous prime is 201021211997. The next prime is 201021212023. The reversal of 201021212010 is 10212120102.

It is an interprime number because it is at equal distance from previous prime (201021211997) and next prime (201021212023).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4744705 + ... + 4786884.

It is an arithmetic number, because the mean of its divisors is an integer number (8149509450).

Almost surely, 2^201021212010 is an apocalyptic number.

201021212010 is an abundant number, since it is smaller than the sum of its proper divisors (320547392790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201021212010 is a wasteful number, since it uses less digits than its factorization.

201021212010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9531655.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201021212010 its reverse (10212120102), we get a palindrome (211233332112).

The spelling of 201021212010 in words is "two hundred one billion, twenty-one million, two hundred twelve thousand, ten".