21020022220102 has 8 divisors (see below), whose sum is σ = 31531098227112. Its totient is φ = 10509656144400.

The previous prime is 21020022220091. The next prime is 21020022220129. The reversal of 21020022220102 is 20102222002012.

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, 177408799 + ... + 177527242.

It is an arithmetic number, because the mean of its divisors is an integer number (3941387278389).

Almost surely, 2^{21020022220102} is an apocalyptic number.

21020022220102 is a deficient number, since it is larger than the sum of its proper divisors (10511076007010).

21020022220102 is a wasteful number, since it uses less digits than its factorization.

21020022220102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354965654.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21020022220102 its reverse (20102222002012), we get a palindrome (41122244222114).

The spelling of 21020022220102 in words is "twenty-one trillion, twenty billion, twenty-two million, two hundred twenty thousand, one hundred two".