11000021021220 has 192 divisors, whose sum is σ = 38780273774592. Its totient is φ = 2263087680000.

The previous prime is 11000021021053. The next prime is 11000021021239. The reversal of 11000021021220 is 2212012000011.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11000021021196 and 11000021021205.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11320296 + ... + 12253535.

It is an arithmetic number, because the mean of its divisors is an integer number (201980592576).

Almost surely, 2^{11000021021220} is an apocalyptic number.

11000021021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11000021021220 is an abundant number, since it is smaller than the sum of its proper divisors (27780252753372).

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

11000021021220 is a wasteful number, since it uses less digits than its factorization.

11000021021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23573962 (or 23573960 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11000021021220 its reverse (2212012000011), we get a palindrome (13212033021231).

The spelling of 11000021021220 in words is "eleven trillion, twenty-one million, twenty-one thousand, two hundred twenty".