201020021212102 has 4 divisors (see below), whose sum is σ = 301530031818156. Its totient is φ = 100510010606050.

The previous prime is 201020021212051. The next prime is 201020021212111. The reversal of 201020021212102 is 201212120020102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×201020021212102² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50255005303024 + ... + 50255005303027.

It is an arithmetic number, because the mean of its divisors is an integer number (75382507954539).

Almost surely, 2^{201020021212102} is an apocalyptic number.

201020021212102 is a deficient number, since it is larger than the sum of its proper divisors (100510010606054).

201020021212102 is a wasteful number, since it uses less digits than its factorization.

201020021212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100510010606053.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201020021212102 its reverse (201212120020102), we get a palindrome (402232141232204).

The spelling of 201020021212102 in words is "two hundred one trillion, twenty billion, twenty-one million, two hundred twelve thousand, one hundred two".