221202021022 has 16 divisors (see below), whose sum is σ = 333883307520. Its totient is φ = 109909348632.

The previous prime is 221202020993. The next prime is 221202021031. The reversal of 221202021022 is 220120202122.

It is a junction number, because it is equal to n+sod(n) for n = 221202020987 and 221202021005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189372 + ... + 691567.

It is an arithmetic number, because the mean of its divisors is an integer number (20867706720).

Almost surely, 2^221202021022 is an apocalyptic number.

221202021022 is a deficient number, since it is larger than the sum of its proper divisors (112681286498).

221202021022 is a wasteful number, since it uses less digits than its factorization.

221202021022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881727.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221202021022 its reverse (220120202122), we get a palindrome (441322223144).

The spelling of 221202021022 in words is "two hundred twenty-one billion, two hundred two million, twenty-one thousand, twenty-two".