21220022102 has 8 divisors (see below), whose sum is σ = 32856808512. Its totient is φ = 10267752600.

The previous prime is 21220022077. The next prime is 21220022119. The reversal of 21220022102 is 20122002212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171129149 + ... + 171129272.

It is an arithmetic number, because the mean of its divisors is an integer number (4107101064).

Almost surely, 2^21220022102 is an apocalyptic number.

21220022102 is a deficient number, since it is larger than the sum of its proper divisors (11636786410).

21220022102 is a wasteful number, since it uses less digits than its factorization.

21220022102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342258454.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21220022102 its reverse (20122002212), we get a palindrome (41342024314).

It can be divided in two parts, 2122002210 and 2, that added together give a palindrome (2122002212).

The spelling of 21220022102 in words is "twenty-one billion, two hundred twenty million, twenty-two thousand, one hundred two".