201020101220100 has 36 divisors (see below), whose sum is σ = 581618159531024. Its totient is φ = 53605360325280.

The previous prime is 201020101220093. The next prime is 201020101220101. The reversal of 201020101220100 is 1022101020102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (201020101220101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335033501734 + ... + 335033502333.

Almost surely, 2^{201020101220100} is an apocalyptic number.

201020101220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201020101220100 is an abundant number, since it is smaller than the sum of its proper divisors (380598058310924).

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

201020101220100 is a wasteful number, since it uses less digits than its factorization.

201020101220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670067004084 (or 670067004077 counting only the distinct ones).

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

Adding to 201020101220100 its reverse (1022101020102), we get a palindrome (202042202240202).

The spelling of 201020101220100 in words is "two hundred one trillion, twenty billion, one hundred one million, two hundred twenty thousand, one hundred".