211122101020 has 12 divisors (see below), whose sum is σ = 443356412184. Its totient is φ = 84448840400.

The previous prime is 211122101011. The next prime is 211122101027. The reversal of 211122101020 is 20101221112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211122101027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5278052506 + ... + 5278052545.

It is an arithmetic number, because the mean of its divisors is an integer number (36946367682).

Almost surely, 2^211122101020 is an apocalyptic number.

211122101020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211122101020 is an abundant number, since it is smaller than the sum of its proper divisors (232234311164).

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

211122101020 is a wasteful number, since it uses less digits than its factorization.

211122101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10556105060 (or 10556105058 counting only the distinct ones).

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

Adding to 211122101020 its reverse (20101221112), we get a palindrome (231223322132).

The spelling of 211122101020 in words is "two hundred eleven billion, one hundred twenty-two million, one hundred one thousand, twenty".