221222021035 has 16 divisors (see below), whose sum is σ = 280447178400. Its totient is φ = 167057703936.

The previous prime is 221222021029. The next prime is 221222021039. The reversal of 221222021035 is 530120222122.

It is a cyclic number.

It is not a de Polignac number, because 221222021035 - 2²³ = 221213632427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221222020997 and 221222021015.

It is not an unprimeable number, because it can be changed into a prime (221222021039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4177030 + ... + 4229659.

It is an arithmetic number, because the mean of its divisors is an integer number (17527948650).

Almost surely, 2^221222021035 is an apocalyptic number.

221222021035 is a deficient number, since it is larger than the sum of its proper divisors (59225157365).

221222021035 is a wasteful number, since it uses less digits than its factorization.

221222021035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8406990.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 221222021035 its reverse (530120222122), we get a palindrome (751342243157).

The spelling of 221222021035 in words is "two hundred twenty-one billion, two hundred twenty-two million, twenty-one thousand, thirty-five".