11220212229 has 4 divisors (see below), whose sum is σ = 14960282976. Its totient is φ = 7480141484.

The previous prime is 11220212221. The next prime is 11220212231. The reversal of 11220212229 is 92221202211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92221202211 = 3 ⋅30740400737.

It is a cyclic number.

It is not a de Polignac number, because 11220212229 - 2³ = 11220212221 is a prime.

It is a super-2 number, since 2×11220212229² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11220212199 and 11220212208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220212221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1870035369 + ... + 1870035374.

It is an arithmetic number, because the mean of its divisors is an integer number (3740070744).

Almost surely, 2^11220212229 is an apocalyptic number.

It is an amenable number.

11220212229 is a deficient number, since it is larger than the sum of its proper divisors (3740070747).

11220212229 is an equidigital number, since it uses as much as digits as its factorization.

11220212229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740070746.

The product of its (nonzero) digits is 576, while the sum is 24.

It can be divided in two parts, 1122021 and 2229, that added together give a triangular number (1124250 = T₁₄₉₉).

The spelling of 11220212229 in words is "eleven billion, two hundred twenty million, two hundred twelve thousand, two hundred twenty-nine".