11011020212 has 6 divisors (see below), whose sum is σ = 19269285378. Its totient is φ = 5505510104.

The previous prime is 11011020197. The next prime is 11011020289. The reversal of 11011020212 is 21202011011.

It can be written as a sum of positive squares in only one way, i.e., 9558190756 + 1452829456 = 97766^2 + 38116^2 .

It is a super-2 number, since 2×11011020212² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11011020193 and 11011020202.

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, 1376377523 + ... + 1376377530.

It is an arithmetic number, because the mean of its divisors is an integer number (3211547563).

Almost surely, 2^11011020212 is an apocalyptic number.

It is an amenable number.

11011020212 is a deficient number, since it is larger than the sum of its proper divisors (8258265166).

11011020212 is a wasteful number, since it uses less digits than its factorization.

11011020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752755057 (or 2752755055 counting only the distinct ones).

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

Adding to 11011020212 its reverse (21202011011), we get a palindrome (32213031223).

The spelling of 11011020212 in words is "eleven billion, eleven million, twenty thousand, two hundred twelve".