11001211212020 has 48 divisors (see below), whose sum is σ = 23598099947520. Its totient is φ = 4306124638464.

The previous prime is 11001211212001. The next prime is 11001211212031. The reversal of 11001211212020 is 2021211210011.

It is a junction number, because it is equal to n+sod(n) for n = 11001211211986 and 11001211212004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4550861 + ... + 6535499.

It is an arithmetic number, because the mean of its divisors is an integer number (491627082240).

Almost surely, 2^{11001211212020} is an apocalyptic number.

11001211212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11001211212020 is an abundant number, since it is smaller than the sum of its proper divisors (12596888735500).

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

11001211212020 is a wasteful number, since it uses less digits than its factorization.

11001211212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990592 (or 1990590 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11001211212020 its reverse (2021211210011), we get a palindrome (13022422422031).

The spelling of 11001211212020 in words is "eleven trillion, one billion, two hundred eleven million, two hundred twelve thousand, twenty".