11021202211212 has 36 divisors (see below), whose sum is σ = 27859889113056. Its totient is φ = 3673636609440.

The previous prime is 11021202211207. The next prime is 11021202211219. The reversal of 11021202211212 is 21211220212011.

11021202211212 is a `hidden beast` number, since 110 + 2 + 120 + 221 + 1 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11021202211219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2678583 + ... + 5405294.

It is an arithmetic number, because the mean of its divisors is an integer number (773885808696).

Almost surely, 2^{11021202211212} is an apocalyptic number.

11021202211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11021202211212 is an abundant number, since it is smaller than the sum of its proper divisors (16838686901844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11021202211212 is a wasteful number, since it uses less digits than its factorization.

11021202211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8121758 (or 8121753 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11021202211212 its reverse (21211220212011), we get a palindrome (32232422423223).

The spelling of 11021202211212 in words is "eleven trillion, twenty-one billion, two hundred two million, two hundred eleven thousand, two hundred twelve".