21220021211102 has 32 divisors (see below), whose sum is σ = 38581071081984. Its totient is φ = 8556285909600.

The previous prime is 21220021211099. The next prime is 21220021211107. The reversal of 21220021211102 is 20111212002212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220021211107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 540149924 + ... + 540189207.

It is an arithmetic number, because the mean of its divisors is an integer number (1205658471312).

Almost surely, 2^{21220021211102} is an apocalyptic number.

21220021211102 is a deficient number, since it is larger than the sum of its proper divisors (17361049870882).

21220021211102 is a wasteful number, since it uses less digits than its factorization.

21220021211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080339224.

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

Adding to 21220021211102 its reverse (20111212002212), we get a palindrome (41331233213314).

The spelling of 21220021211102 in words is "twenty-one trillion, two hundred twenty billion, twenty-one million, two hundred eleven thousand, one hundred two".