211211301020 has 48 divisors (see below), whose sum is σ = 445706761248. Its totient is φ = 84072867840.

The previous prime is 211211301013. The next prime is 211211301029. The reversal of 211211301020 is 20103112112.

It is a super-2 number, since 2×211211301020² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211211300986 and 211211301004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211211301029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10854500 + ... + 10873940.

It is an arithmetic number, because the mean of its divisors is an integer number (9285557526).

Almost surely, 2^211211301020 is an apocalyptic number.

211211301020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211211301020 is an abundant number, since it is smaller than the sum of its proper divisors (234495460228).

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

211211301020 is a wasteful number, since it uses less digits than its factorization.

211211301020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22070 (or 22068 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 211211301020 its reverse (20103112112), we get a palindrome (231314413132).

The spelling of 211211301020 in words is "two hundred eleven billion, two hundred eleven million, three hundred one thousand, twenty".