20101211020200 has 96 divisors (see below), whose sum is σ = 62502013856160. Its totient is φ = 5344128556800.

The previous prime is 20101211020147. The next prime is 20101211020201. The reversal of 20101211020200 is 202011210102.

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 (20101211020201) 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, 50408679 + ... + 50805878.

It is an arithmetic number, because the mean of its divisors is an integer number (651062644335).

Almost surely, 2^{20101211020200} is an apocalyptic number.

20101211020200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20101211020200 is an abundant number, since it is smaller than the sum of its proper divisors (42400802835960).

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

20101211020200 is a wasteful number, since it uses less digits than its factorization.

20101211020200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101214907 (or 101214898 counting only the distinct ones).

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

Adding to 20101211020200 its reverse (202011210102), we get a palindrome (20303222230302).

The spelling of 20101211020200 in words is "twenty trillion, one hundred one billion, two hundred eleven million, twenty thousand, two hundred".