11211012211020 has 96 divisors (see below), whose sum is σ = 32596964326080. Its totient is φ = 2876731453440.

The previous prime is 11211012211019. The next prime is 11211012211039. The reversal of 11211012211020 is 2011221011211.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31034955 + ... + 31394114.

It is an arithmetic number, because the mean of its divisors is an integer number (339551711730).

Almost surely, 2^{11211012211020} is an apocalyptic number.

11211012211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211012211020 is an abundant number, since it is smaller than the sum of its proper divisors (21385952115060).

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

11211012211020 is a wasteful number, since it uses less digits than its factorization.

11211012211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62429195 (or 62429193 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11211012211020 its reverse (2011221011211), we get a palindrome (13222233222231).

It can be divided in two parts, 112110 and 12211020, that added together give a triangular number (12323130 = T₄₉₆₄).

The spelling of 11211012211020 in words is "eleven trillion, two hundred eleven billion, twelve million, two hundred eleven thousand, twenty".