2011203211020 has 48 divisors (see below), whose sum is σ = 5927756835840. Its totient is φ = 508093442496.

The previous prime is 2011203210959. The next prime is 2011203211021. The reversal of 2011203211020 is 201123021102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (2011203211021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 882105532 + ... + 882107811.

It is an arithmetic number, because the mean of its divisors is an integer number (123494934080).

Almost surely, 2^{2011203211020} is an apocalyptic number.

2011203211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011203211020 is an abundant number, since it is smaller than the sum of its proper divisors (3916553624820).

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

2011203211020 is a wasteful number, since it uses less digits than its factorization.

2011203211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764213374 (or 1764213372 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 2011203211020 its reverse (201123021102), we get a palindrome (2212326232122).

The spelling of 2011203211020 in words is "two trillion, eleven billion, two hundred three million, two hundred eleven thousand, twenty".