21022012220102 has 4 divisors (see below), whose sum is σ = 31533018330156. Its totient is φ = 10511006110050.

The previous prime is 21022012220081. The next prime is 21022012220113. The reversal of 21022012220102 is 20102221022012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5255503055024 + ... + 5255503055027.

It is an arithmetic number, because the mean of its divisors is an integer number (7883254582539).

Almost surely, 2^{21022012220102} is an apocalyptic number.

21022012220102 is a deficient number, since it is larger than the sum of its proper divisors (10511006110054).

21022012220102 is a wasteful number, since it uses less digits than its factorization.

21022012220102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10511006110053.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21022012220102 its reverse (20102221022012), we get a palindrome (41124233242114).

The spelling of 21022012220102 in words is "twenty-one trillion, twenty-two billion, twelve million, two hundred twenty thousand, one hundred two".