10211021100 has 432 divisors, whose sum is σ = 39335482368. Its totient is φ = 2162350080.

The previous prime is 10211021099. The next prime is 10211021131. The reversal of 10211021100 is 112011201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 7174989 + ... + 7176411.

Almost surely, 2^10211021100 is an apocalyptic number.

10211021100 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 10211021100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19667741184).

10211021100 is an abundant number, since it is smaller than the sum of its proper divisors (29124461268).

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

10211021100 is a wasteful number, since it uses less digits than its factorization.

10211021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534 (or 1524 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10211021100 its reverse (112011201), we get a palindrome (10323032301).

It can be divided in two parts, 1021 and 1021100, that added together give a square (1022121 = 1011²).

The spelling of 10211021100 in words is "ten billion, two hundred eleven million, twenty-one thousand, one hundred".