211123331101020 has 96 divisors (see below), whose sum is σ = 636625554465600. Its totient is φ = 51968206909440.

The previous prime is 211123331101019. The next prime is 211123331101043. The reversal of 211123331101020 is 20101133321112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66423300 + ... + 69529140.

It is an arithmetic number, because the mean of its divisors is an integer number (6631516192350).

Almost surely, 2^{211123331101020} is an apocalyptic number.

211123331101020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211123331101020 is an abundant number, since it is smaller than the sum of its proper divisors (425502223364580).

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

211123331101020 is a wasteful number, since it uses less digits than its factorization.

211123331101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193015 (or 3193013 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 211123331101020 its reverse (20101133321112), we get a palindrome (231224464422132).

The spelling of 211123331101020 in words is "two hundred eleven trillion, one hundred twenty-three billion, three hundred thirty-one million, one hundred one thousand, twenty".