201020102101102 has 4 divisors (see below), whose sum is σ = 301530153151656. Its totient is φ = 100510051050550.

The previous prime is 201020102101097. The next prime is 201020102101103. The reversal of 201020102101102 is 201101201020102.

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

It is a super-2 number, since 2×201020102101102² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020102101103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50255025525274 + ... + 50255025525277.

It is an arithmetic number, because the mean of its divisors is an integer number (75382538287914).

Almost surely, 2^{201020102101102} is an apocalyptic number.

201020102101102 is a deficient number, since it is larger than the sum of its proper divisors (100510051050554).

201020102101102 is a wasteful number, since it uses less digits than its factorization.

201020102101102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100510051050553.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201020102101102 its reverse (201101201020102), we get a palindrome (402121303121204).

The spelling of 201020102101102 in words is "two hundred one trillion, twenty billion, one hundred two million, one hundred one thousand, one hundred two".