10212021216 has 120 divisors (see below), whose sum is σ = 30063587400. Its totient is φ = 3400572672.

The previous prime is 10212021107. The next prime is 10212021217. The reversal of 10212021216 is 61212021201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212021217) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4864135 + ... + 4866233.

It is an arithmetic number, because the mean of its divisors is an integer number (250529895).

Almost surely, 2^10212021216 is an apocalyptic number.

10212021216 is a gapful number since it is divisible by the number (16) 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 10212021216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15031793700).

10212021216 is an abundant number, since it is smaller than the sum of its proper divisors (19851566184).

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

10212021216 is a wasteful number, since it uses less digits than its factorization.

10212021216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3998 (or 3981 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 10212021216 its reverse (61212021201), we get a palindrome (71424042417).

The spelling of 10212021216 in words is "ten billion, two hundred twelve million, twenty-one thousand, two hundred sixteen".