211122011020 has 12 divisors (see below), whose sum is σ = 443356223184. Its totient is φ = 84448804400.

The previous prime is 211122011017. The next prime is 211122011047. The reversal of 211122011020 is 20110221112.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5278050256 + ... + 5278050295.

It is an arithmetic number, because the mean of its divisors is an integer number (36946351932).

Almost surely, 2^211122011020 is an apocalyptic number.

211122011020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211122011020 is an abundant number, since it is smaller than the sum of its proper divisors (232234212164).

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

211122011020 is a wasteful number, since it uses less digits than its factorization.

211122011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10556100560 (or 10556100558 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211122011020 its reverse (20110221112), we get a palindrome (231232232132).

The spelling of 211122011020 in words is "two hundred eleven billion, one hundred twenty-two million, eleven thousand, twenty".