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21202002222 = 2330869114473
BaseRepresentation
bin10011101111101111…
…001110000100101110
32000201121022022022120
4103233233032010232
5321410203032342
613423504253410
71350256021362
oct235757160456
960647268276
1021202002222
118a9aa83095
124138611266
131ccb72055b
141051bb72a2
1584154eaec
hex4efbce12e

21202002222 has 16 divisors (see below), whose sum is σ = 42405748560. Its totient is φ = 7067043392.

The previous prime is 21202002187. The next prime is 21202002223. The reversal of 21202002222 is 22220020212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202002223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127978 + ... + 242450.

It is an arithmetic number, because the mean of its divisors is an integer number (2650359285).

Almost surely, 221202002222 is an apocalyptic number.

21202002222 is an abundant number, since it is smaller than the sum of its proper divisors (21203746338).

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

21202002222 is a wasteful number, since it uses less digits than its factorization.

21202002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145347.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 21202002222 its reverse (22220020212), we get a palindrome (43422022434).

The spelling of 21202002222 in words is "twenty-one billion, two hundred two million, two thousand, two hundred twenty-two".

Divisors: 1 2 3 6 30869 61738 92607 114473 185214 228946 343419 686838 3533667037 7067334074 10601001111 21202002222