1111211020210 has 96 divisors (see below), whose sum is σ = 2199691750032. Its totient is φ = 402530549760.

The previous prime is 1111211020189. The next prime is 1111211020219. The reversal of 1111211020210 is 120201121111.

It is a happy number.

It can be written as a sum of positive squares in 24 ways, for example, as 12066363409 + 1099144656801 = 109847^2 + 1048401^2 .

It is a super-2 number, since 2×1111211020210² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1111211020219) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37128172 + ... + 37158088.

Almost surely, 2^{1111211020210} is an apocalyptic number.

1111211020210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1111211020210 is a deficient number, since it is larger than the sum of its proper divisors (1088480729822).

1111211020210 is a wasteful number, since it uses less digits than its factorization.

1111211020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30128 (or 30055 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1111211020210 its reverse (120201121111), we get a palindrome (1231412141321).

The spelling of 1111211020210 in words is "one trillion, one hundred eleven billion, two hundred eleven million, twenty thousand, two hundred ten".