20010102200 has 96 divisors (see below), whose sum is σ = 50981736960. Its totient is φ = 7243593600.

The previous prime is 20010102191. The next prime is 20010102253. The reversal of 20010102200 is 220101002.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 470207 + ... + 510993.

It is an arithmetic number, because the mean of its divisors is an integer number (531059760).

Almost surely, 2^20010102200 is an apocalyptic number.

20010102200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20010102200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25490868480).

20010102200 is an abundant number, since it is smaller than the sum of its proper divisors (30971634760).

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

20010102200 is a wasteful number, since it uses less digits than its factorization.

20010102200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41037 (or 41028 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 20010102200 its reverse (220101002), we get a palindrome (20230203202).

The spelling of 20010102200 in words is "twenty billion, ten million, one hundred two thousand, two hundred".