211020222202104 has 128 divisors (see below), whose sum is σ = 610204928256000. Its totient is φ = 59562553137024.

The previous prime is 211020222202103. The next prime is 211020222202129. The reversal of 211020222202104 is 401202222020112.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020222202103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 340188667 + ... + 340808405.

It is an arithmetic number, because the mean of its divisors is an integer number (4767226002000).

Almost surely, 2^{211020222202104} is an apocalyptic number.

211020222202104 is a gapful number since it is divisible by the number (24) 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 211020222202104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305102464128000).

211020222202104 is an abundant number, since it is smaller than the sum of its proper divisors (399184706053896).

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

211020222202104 is a wasteful number, since it uses less digits than its factorization.

211020222202104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644257 (or 644253 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 211020222202104 its reverse (401202222020112), we get a palindrome (612222444222216).

The spelling of 211020222202104 in words is "two hundred eleven trillion, twenty billion, two hundred twenty-two million, two hundred two thousand, one hundred four".