1211100170226 has 16 divisors (see below), whose sum is σ = 2429988769728. Its totient is φ = 402401985200.

The previous prime is 1211100170213. The next prime is 1211100170227. The reversal of 1211100170226 is 6220710011121.

It is a super-4 number, since 4×1211100170226⁴ (a number of 49 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211100170196 and 1211100170205.

It is not an unprimeable number, because it can be changed into a prime (1211100170227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324515865 + ... + 324519596.

It is an arithmetic number, because the mean of its divisors is an integer number (151874298108).

Almost surely, 2^{1211100170226} is an apocalyptic number.

1211100170226 is an abundant number, since it is smaller than the sum of its proper divisors (1218888599502).

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

1211100170226 is a wasteful number, since it uses less digits than its factorization.

1211100170226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649035777.

The product of its (nonzero) digits is 336, while the sum is 24.

Adding to 1211100170226 its reverse (6220710011121), we get a palindrome (7431810181347).

The spelling of 1211100170226 in words is "one trillion, two hundred eleven billion, one hundred million, one hundred seventy thousand, two hundred twenty-six".