212211032020 has 72 divisors (see below), whose sum is σ = 484440002424. Its totient is φ = 78049640448.

The previous prime is 212211031999. The next prime is 212211032051. The reversal of 212211032020 is 20230112212.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 40546655044 + 171664376976 = 201362^2 + 414324^2 .

It is a super-2 number, since 2×212211032020² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212211031985 and 212211032003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 746512 + ... + 990808.

It is an arithmetic number, because the mean of its divisors is an integer number (6728333367).

Almost surely, 2^212211032020 is an apocalyptic number.

212211032020 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 212211032020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242220001212).

212211032020 is an abundant number, since it is smaller than the sum of its proper divisors (272228970404).

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

212211032020 is a wasteful number, since it uses less digits than its factorization.

212211032020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244589 (or 244574 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 212211032020 its reverse (20230112212), we get a palindrome (232441144232).

The spelling of 212211032020 in words is "two hundred twelve billion, two hundred eleven million, thirty-two thousand, twenty".