221002221022 has 16 divisors (see below), whose sum is σ = 361705865472. Its totient is φ = 100437258520.

The previous prime is 221002221007. The next prime is 221002221043. The reversal of 221002221022 is 220122200122.

It is a junction number, because it is equal to n+sod(n) for n = 221002220987 and 221002221005.

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, 790918 + ... + 1033225.

It is an arithmetic number, because the mean of its divisors is an integer number (22606616592).

Almost surely, 2^221002221022 is an apocalyptic number.

221002221022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221002221022 is a deficient number, since it is larger than the sum of its proper divisors (140703644450).

221002221022 is a wasteful number, since it uses less digits than its factorization.

221002221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829663.

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

Adding to 221002221022 its reverse (220122200122), we get a palindrome (441124421144).

The spelling of 221002221022 in words is "two hundred twenty-one billion, two million, two hundred twenty-one thousand, twenty-two".