21020221211102 has 8 divisors (see below), whose sum is σ = 32299364300112. Its totient is φ = 10253766444400.

The previous prime is 21020221211071. The next prime is 21020221211117. The reversal of 21020221211102 is 20111212202012.

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

It is a super-3 number, since 3×21020221211102³ (a number of 41 digits) contains 333 as substring.

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, 128172080474 + ... + 128172080637.

It is an arithmetic number, because the mean of its divisors is an integer number (4037420537514).

Almost surely, 2^{21020221211102} is an apocalyptic number.

21020221211102 is a deficient number, since it is larger than the sum of its proper divisors (11279143089010).

21020221211102 is a wasteful number, since it uses less digits than its factorization.

21020221211102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256344161154.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21020221211102 its reverse (20111212202012), we get a palindrome (41131433413114).

It can be divided in two parts, 21020 and 221211102, that added together give a palindrome (221232122).

The spelling of 21020221211102 in words is "twenty-one trillion, twenty billion, two hundred twenty-one million, two hundred eleven thousand, one hundred two".