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21220022010021 = 3233124351244129
BaseRepresentation
bin1001101001100101010111…
…10111111100000010100101
32210010121120211010002221220
410310302223313330002211
510240132101113310041
6113044202111530553
74320044633011662
oct464625367740245
983117524102856
1021220022010021
1168413a724664a
1224686ba529a59
13bac0689b1643
145350a995aa69
1526beac6d8d66
hex134cabdfc0a5

21220022010021 has 16 divisors (see below), whose sum is σ = 28415138319360. Its totient is φ = 14085794995200.

The previous prime is 21220022009987. The next prime is 21220022010029. The reversal of 21220022010021 is 12001022002212.

It is not a de Polignac number, because 21220022010021 - 233 = 21211432075429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220022010029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86799285 + ... + 87043413.

It is an arithmetic number, because the mean of its divisors is an integer number (1775946144960).

Almost surely, 221220022010021 is an apocalyptic number.

It is an amenable number.

21220022010021 is a deficient number, since it is larger than the sum of its proper divisors (7195116309339).

21220022010021 is a wasteful number, since it uses less digits than its factorization.

21220022010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368716.

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

Adding to 21220022010021 its reverse (12001022002212), we get a palindrome (33221044012233).

The spelling of 21220022010021 in words is "twenty-one trillion, two hundred twenty billion, twenty-two million, ten thousand, twenty-one".

Divisors: 1 3 233 699 124351 244129 373053 732387 28973783 56882057 86921349 170646171 30357685279 91073055837 7073340670007 21220022010021