11220202120212 has 18 divisors (see below), whose sum is σ = 28362177581738. Its totient is φ = 3740067373392.

The previous prime is 11220202120207. The next prime is 11220202120291. The reversal of 11220202120212 is 21202120202211.

It is a happy number.

11220202120212 is a `hidden beast` number, since 1 + 1 + 220 + 20 + 212 + 0 + 212 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11097732918276 + 122469201936 = 3331326^2 + 349956^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155836140523 + ... + 155836140594.

Almost surely, 2^{11220202120212} is an apocalyptic number.

11220202120212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11220202120212 is an abundant number, since it is smaller than the sum of its proper divisors (17141975461526).

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

11220202120212 is a wasteful number, since it uses less digits than its factorization.

11220202120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311672281127 (or 311672281122 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11220202120212 its reverse (21202120202211), we get a palindrome (32422322322423).

The spelling of 11220202120212 in words is "eleven trillion, two hundred twenty billion, two hundred two million, one hundred twenty thousand, two hundred twelve".