11021012100 has 432 divisors, whose sum is σ = 41191113600. Its totient is φ = 2411458560.

The previous prime is 11021012087. The next prime is 11021012113. The reversal of 11021012100 is 121012011.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11021012087) and next prime (11021012113).

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, 32703132 + ... + 32703468.

It is an arithmetic number, because the mean of its divisors is an integer number (95349800).

Almost surely, 2^11021012100 is an apocalyptic number.

11021012100 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 11021012100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20595556800).

11021012100 is an abundant number, since it is smaller than the sum of its proper divisors (30170101500).

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

11021012100 is a wasteful number, since it uses less digits than its factorization.

11021012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 562 counting only the distinct ones).

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

Adding to 11021012100 its reverse (121012011), we get a palindrome (11142024111).

The spelling of 11021012100 in words is "eleven billion, twenty-one million, twelve thousand, one hundred".