21122222021102 has 8 divisors (see below), whose sum is σ = 31683549682200. Its totient is φ = 10561038793704.

The previous prime is 21122222021063. The next prime is 21122222021119. The reversal of 21122222021102 is 20112022222112.

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

It is a super-2 number, since 2×21122222021102² (a number of 27 digits) contains 22 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, 35742077 + ... + 36328232.

It is an arithmetic number, because the mean of its divisors is an integer number (3960443710275).

Almost surely, 2^{21122222021102} is an apocalyptic number.

21122222021102 is a deficient number, since it is larger than the sum of its proper divisors (10561327661098).

21122222021102 is a wasteful number, since it uses less digits than its factorization.

21122222021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72216850.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21122222021102 its reverse (20112022222112), we get a palindrome (41234244243214).

The spelling of 21122222021102 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred twenty-two million, twenty-one thousand, one hundred two".