10012212100 has 72 divisors (see below), whose sum is σ = 23882908896. Its totient is φ = 3612960000.

The previous prime is 10012212079. The next prime is 10012212103. The reversal of 10012212100 is 121221001.

It is a super-2 number, since 2×10012212100² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (10012212103) 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, 109360 + ... + 178840.

It is an arithmetic number, because the mean of its divisors is an integer number (331707068).

Almost surely, 2^10012212100 is an apocalyptic number.

10012212100 is a gapful number since it is divisible by the number (10) 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 10012212100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11941454448).

10012212100 is an abundant number, since it is smaller than the sum of its proper divisors (13870696796).

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

10012212100 is a wasteful number, since it uses less digits than its factorization.

10012212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69637 (or 69630 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10012212100 its reverse (121221001), we get a palindrome (10133433101).

The spelling of 10012212100 in words is "ten billion, twelve million, two hundred twelve thousand, one hundred".