211205222007104 has 56 divisors (see below), whose sum is σ = 453286744321320. Its totient is φ = 97060966907904.

The previous prime is 211205222007079. The next prime is 211205222007121. The reversal of 211205222007104 is 401700222502112.

It can be written as a sum of positive squares in 4 ways, for example, as 8424204392704 + 202781017614400 = 2902448^2 + 14240120^2 .

It is a congruent number.

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, 544553849 + ... + 544941560.

It is an arithmetic number, because the mean of its divisors is an integer number (8094406148595).

Almost surely, 2^{211205222007104} is an apocalyptic number.

It is an amenable number.

211205222007104 is an abundant number, since it is smaller than the sum of its proper divisors (242081522314216).

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

211205222007104 is a wasteful number, since it uses less digits than its factorization.

211205222007104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089495667 (or 1089495657 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

Adding to 211205222007104 its reverse (401700222502112), we get a palindrome (612905444509216).

The spelling of 211205222007104 in words is "two hundred eleven trillion, two hundred five billion, two hundred twenty-two million, seven thousand, one hundred four".