21220212020102 has 8 divisors (see below), whose sum is σ = 31832085158976. Its totient is φ = 10609516967112.

The previous prime is 21220212020093. The next prime is 21220212020107. The reversal of 21220212020102 is 20102021202212.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220212020107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294476438 + ... + 294548489.

It is an arithmetic number, because the mean of its divisors is an integer number (3979010644872).

Almost surely, 2^{21220212020102} is an apocalyptic number.

21220212020102 is a deficient number, since it is larger than the sum of its proper divisors (10611873138874).

21220212020102 is a wasteful number, since it uses less digits than its factorization.

21220212020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589042942.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21220212020102 its reverse (20102021202212), we get a palindrome (41322233222314).

The spelling of 21220212020102 in words is "twenty-one trillion, two hundred twenty billion, two hundred twelve million, twenty thousand, one hundred two".