1211222011102 has 8 divisors (see below), whose sum is σ = 1829903758200. Its totient is φ = 601254091704.

The previous prime is 1211222011093. The next prime is 1211222011117. The reversal of 1211222011102 is 2011102221121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1211222011102² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2178456577 + ... + 2178457132.

It is an arithmetic number, because the mean of its divisors is an integer number (228737969775).

Almost surely, 2^{1211222011102} is an apocalyptic number.

1211222011102 is a deficient number, since it is larger than the sum of its proper divisors (618681747098).

1211222011102 is a wasteful number, since it uses less digits than its factorization.

1211222011102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4356913850.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1211222011102 its reverse (2011102221121), we get a palindrome (3222324232223).

The spelling of 1211222011102 in words is "one trillion, two hundred eleven billion, two hundred twenty-two million, eleven thousand, one hundred two".