221220011111122 has 64 divisors (see below), whose sum is σ = 356592843763200. Its totient is φ = 102552396226560.

The previous prime is 221220011111101. The next prime is 221220011111129. The reversal of 221220011111122 is 221111110022122.

It is a happy number.

221220011111122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221220011111122² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221220011111122.

It is not an unprimeable number, because it can be changed into a prime (221220011111129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18877032379 + ... + 18877044097.

It is an arithmetic number, because the mean of its divisors is an integer number (5571763183800).

Almost surely, 2^{221220011111122} is an apocalyptic number.

221220011111122 is a deficient number, since it is larger than the sum of its proper divisors (135372832652078).

221220011111122 is a wasteful number, since it uses less digits than its factorization.

221220011111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17611.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 221220011111122 its reverse (221111110022122), we get a palindrome (442331121133244).

The spelling of 221220011111122 in words is "two hundred twenty-one trillion, two hundred twenty billion, eleven million, one hundred eleven thousand, one hundred twenty-two".