11211222211012 has 6 divisors (see below), whose sum is σ = 19619638869278. Its totient is φ = 5605611105504.

The previous prime is 11211222210983. The next prime is 11211222211061. The reversal of 11211222211012 is 21011222211211.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11193133036996 + 18089174016 = 3345614^2 + 134496^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1401402776373 + ... + 1401402776380.

Almost surely, 2^{11211222211012} is an apocalyptic number.

It is an amenable number.

11211222211012 is a deficient number, since it is larger than the sum of its proper divisors (8408416658266).

11211222211012 is a wasteful number, since it uses less digits than its factorization.

11211222211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802805552757 (or 2802805552755 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11211222211012 its reverse (21011222211211), we get a palindrome (32222444422223).

The spelling of 11211222211012 in words is "eleven trillion, two hundred eleven billion, two hundred twenty-two million, two hundred eleven thousand, twelve".