20100001012212 has 96 divisors (see below), whose sum is σ = 51683772801024. Its totient is φ = 6029020368000.

The previous prime is 20100001012183. The next prime is 20100001012253. The reversal of 20100001012212 is 21221010000102.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51092253 + ... + 51484155.

It is an arithmetic number, because the mean of its divisors is an integer number (538372633344).

Almost surely, 2^{20100001012212} is an apocalyptic number.

20100001012212 is a gapful number since it is divisible by the number (22) 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 20100001012212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25841886400512).

20100001012212 is an abundant number, since it is smaller than the sum of its proper divisors (31583771788812).

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

20100001012212 is a wasteful number, since it uses less digits than its factorization.

20100001012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395869 (or 395867 counting only the distinct ones).

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

Adding to 20100001012212 its reverse (21221010000102), we get a palindrome (41321011012314).

The spelling of 20100001012212 in words is "twenty trillion, one hundred billion, one million, twelve thousand, two hundred twelve".