11211212102 has 4 divisors (see below), whose sum is σ = 16816818156. Its totient is φ = 5605606050.

The previous prime is 11211212053. The next prime is 11211212123. The reversal of 11211212102 is 20121211211.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2802803024 + ... + 2802803027.

It is an arithmetic number, because the mean of its divisors is an integer number (4204204539).

Almost surely, 2^11211212102 is an apocalyptic number.

11211212102 is a deficient number, since it is larger than the sum of its proper divisors (5605606054).

11211212102 is an equidigital number, since it uses as much as digits as its factorization.

11211212102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5605606053.

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

Adding to 11211212102 its reverse (20121211211), we get a palindrome (31332423313).

The spelling of 11211212102 in words is "eleven billion, two hundred eleven million, two hundred twelve thousand, one hundred two".