21022022100102 has 32 divisors (see below), whose sum is σ = 43984827843840. Its totient is φ = 6685443172320.

The previous prime is 21022022100089. The next prime is 21022022100103. The reversal of 21022022100102 is 20100122022012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022022100103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195747724 + ... + 195855087.

It is an arithmetic number, because the mean of its divisors is an integer number (1374525870120).

Almost surely, 2^{21022022100102} is an apocalyptic number.

21022022100102 is an abundant number, since it is smaller than the sum of its proper divisors (22962805743738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21022022100102 is a wasteful number, since it uses less digits than its factorization.

21022022100102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391603228.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21022022100102 its reverse (20100122022012), we get a palindrome (41122144122114).

The spelling of 21022022100102 in words is "twenty-one trillion, twenty-two billion, twenty-two million, one hundred thousand, one hundred two".