11020121100 has 108 divisors (see below), whose sum is σ = 36043849296. Its totient is φ = 2810924160.

The previous prime is 11020121059. The next prime is 11020121111. The reversal of 11020121100 is 112102011.

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 35 ways as a sum of consecutive naturals, for example, 245487 + ... + 286886.

Almost surely, 2^11020121100 is an apocalyptic number.

11020121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11020121100 is an abundant number, since it is smaller than the sum of its proper divisors (25023728196).

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

11020121100 is a wasteful number, since it uses less digits than its factorization.

11020121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532416 (or 532406 counting only the distinct ones).

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

Adding to 11020121100 its reverse (112102011), we get a palindrome (11132223111).

The spelling of 11020121100 in words is "eleven billion, twenty million, one hundred twenty-one thousand, one hundred".