2111101211020 has 48 divisors (see below), whose sum is σ = 4508904331008. Its totient is φ = 830162540480.

The previous prime is 2111101210997. The next prime is 2111101211041. The reversal of 2111101211020 is 201121011112.

It is a happy number.

It is a super-2 number, since 2×2111101211020² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3484912 + ... + 4045591.

It is an arithmetic number, because the mean of its divisors is an integer number (93935506896).

Almost surely, 2^{2111101211020} is an apocalyptic number.

2111101211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111101211020 is an abundant number, since it is smaller than the sum of its proper divisors (2397803119988).

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

2111101211020 is a wasteful number, since it uses less digits than its factorization.

2111101211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7530750 (or 7530748 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2111101211020 its reverse (201121011112), we get a palindrome (2312222222132).

The spelling of 2111101211020 in words is "two trillion, one hundred eleven billion, one hundred one million, two hundred eleven thousand, twenty".