211211120210020 has 24 divisors (see below), whose sum is σ = 506906688504384. Its totient is φ = 72415241214816.

The previous prime is 211211120210017. The next prime is 211211120210047. The reversal of 211211120210020 is 20012021112112.

It is a super-2 number, since 2×211211120210020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211211120209976 and 211211120210003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754325429182 + ... + 754325429461.

It is an arithmetic number, because the mean of its divisors is an integer number (21121112021016).

Almost surely, 2^{211211120210020} is an apocalyptic number.

211211120210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211211120210020 is an abundant number, since it is smaller than the sum of its proper divisors (295695568294364).

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

211211120210020 is a wasteful number, since it uses less digits than its factorization.

211211120210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508650858659 (or 1508650858657 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211211120210020 its reverse (20012021112112), we get a palindrome (231223141322132).

The spelling of 211211120210020 in words is "two hundred eleven trillion, two hundred eleven billion, one hundred twenty million, two hundred ten thousand, twenty".