201030122100 has 72 divisors (see below), whose sum is σ = 615861707328. Its totient is φ = 50454617600.

The previous prime is 201030122087. The next prime is 201030122107. The reversal of 201030122100 is 1221030102.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201030122107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19703736 + ... + 19713935.

It is an arithmetic number, because the mean of its divisors is an integer number (8553634824).

Almost surely, 2^201030122100 is an apocalyptic number.

201030122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201030122100 is an abundant number, since it is smaller than the sum of its proper divisors (414831585228).

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

201030122100 is a wasteful number, since it uses less digits than its factorization.

201030122100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39417705 (or 39417698 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 201030122100 its reverse (1221030102), we get a palindrome (202251152202).

The spelling of 201030122100 in words is "two hundred one billion, thirty million, one hundred twenty-two thousand, one hundred".