102202222002021 has 6 divisors (see below), whose sum is σ = 147625431780710. Its totient is φ = 68134814668008.

The previous prime is 102202222001983. The next prime is 102202222002031. The reversal of 102202222002021 is 120200222202201.

102202222002021 is a `hidden beast` number, since 1 + 0 + 220 + 22 + 220 + 0 + 202 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 99061213702500 + 3141008299521 = 9952950^2 + 1772289^2 .

It is not a de Polignac number, because 102202222002021 - 2¹³ = 102202221993829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102202222001985 and 102202222002003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102202222002031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5677901222326 + ... + 5677901222343.

Almost surely, 2^{102202222002021} is an apocalyptic number.

It is an amenable number.

102202222002021 is a deficient number, since it is larger than the sum of its proper divisors (45423209778689).

102202222002021 is a wasteful number, since it uses less digits than its factorization.

102202222002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11355802444675 (or 11355802444672 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 102202222002021 its reverse (120200222202201), we get a palindrome (222402444204222).

The spelling of 102202222002021 in words is "one hundred two trillion, two hundred two billion, two hundred twenty-two million, two thousand, twenty-one".