11211221102 has 8 divisors (see below), whose sum is σ = 16820568216. Its totient is φ = 5604365032.

The previous prime is 11211221101. The next prime is 11211221137. The reversal of 11211221102 is 20112211211.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211221101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611468 + ... + 629535.

It is an arithmetic number, because the mean of its divisors is an integer number (2102571027).

Almost surely, 2^11211221102 is an apocalyptic number.

11211221102 is a deficient number, since it is larger than the sum of its proper divisors (5609347114).

11211221102 is a wasteful number, since it uses less digits than its factorization.

11211221102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245522.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11211221102 its reverse (20112211211), we get a palindrome (31323432313).

The spelling of 11211221102 in words is "eleven billion, two hundred eleven million, two hundred twenty-one thousand, one hundred two".