11211020012 has 24 divisors (see below), whose sum is σ = 19691320320. Its totient is φ = 5584957520.

The previous prime is 11211020003. The next prime is 11211020057. The reversal of 11211020012 is 21002011211.

It is a junction number, because it is equal to n+sod(n) for n = 11211019975 and 11211020002.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2046437 + ... + 2051907.

It is an arithmetic number, because the mean of its divisors is an integer number (820471680).

Almost surely, 2^11211020012 is an apocalyptic number.

It is an amenable number.

11211020012 is a deficient number, since it is larger than the sum of its proper divisors (8480300308).

11211020012 is a wasteful number, since it uses less digits than its factorization.

11211020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7261 (or 7259 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11211020012 its reverse (21002011211), we get a palindrome (32213031223).

The spelling of 11211020012 in words is "eleven billion, two hundred eleven million, twenty thousand, twelve".