20100002001200 has 120 divisors (see below), whose sum is σ = 52687031653440. Its totient is φ = 7308154604800.

The previous prime is 20100002001197. The next prime is 20100002001257. The reversal of 20100002001200 is 210020000102.

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

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, 34501931 + ... + 35079669.

It is an arithmetic number, because the mean of its divisors is an integer number (439058597112).

Almost surely, 2^{20100002001200} is an apocalyptic number.

20100002001200 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 20100002001200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26343515826720).

20100002001200 is an abundant number, since it is smaller than the sum of its proper divisors (32587029652240).

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

20100002001200 is a wasteful number, since it uses less digits than its factorization.

20100002001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585675 (or 585664 counting only the distinct ones).

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

Adding to 20100002001200 its reverse (210020000102), we get a palindrome (20310022001302).

The spelling of 20100002001200 in words is "twenty trillion, one hundred billion, two million, one thousand, two hundred".