211211020020000 has 4320 divisors, whose sum is σ = 965046150129600. Its totient is φ = 40044533760000.

The previous prime is 211211020019981. The next prime is 211211020020001. The reversal of 211211020020000 is 20020112112.

It is a super-2 number, since 2×211211020020000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (211211020020001) by changing a digit.

It is a polite number, since it can be written in 719 ways as a sum of consecutive naturals, for example, 504083579791 + ... + 504083580209.

It is an arithmetic number, because the mean of its divisors is an integer number (223390312530).

Almost surely, 2^{211211020020000} is an apocalyptic number.

211211020020000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211211020020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (482523075064800).

211211020020000 is an abundant number, since it is smaller than the sum of its proper divisors (753835130109600).

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

211211020020000 is a wasteful number, since it uses less digits than its factorization.

211211020020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 569 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 211211020020000 its reverse (20020112112), we get a palindrome (211231040132112).

The spelling of 211211020020000 in words is "two hundred eleven trillion, two hundred eleven billion, twenty million, twenty thousand".