201021212102 has 32 divisors (see below), whose sum is σ = 310260924288. Its totient is φ = 97634474496.

The previous prime is 201021212101. The next prime is 201021212167. The reversal of 201021212102 is 201212120102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021212101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13820978 + ... + 13835514.

It is an arithmetic number, because the mean of its divisors is an integer number (9695653884).

Almost surely, 2^201021212102 is an apocalyptic number.

201021212102 is a deficient number, since it is larger than the sum of its proper divisors (109239712186).

201021212102 is a wasteful number, since it uses less digits than its factorization.

201021212102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15680.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201021212102 its reverse (201212120102), we get a palindrome (402233332204).

The spelling of 201021212102 in words is "two hundred one billion, twenty-one million, two hundred twelve thousand, one hundred two".